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Doug's Headers 1964-77 Ford/Mercury Small Block with Floor Shift 1 5/8" Long Tube Header with Metallic Ceramic Coating D668

Doug's Headers 1964-77 Ford/Mercury Small Block with Floor Shift 1 5/8" Long Tube Header with Metallic Ceramic Coating D668
$1,825.99 st
NEWARRIVING SOONEstimated Ship Date 09/03/2026 (If Ordered Today)
Model: 3011549
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 1
STORE PICKUP
[More Info]
Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market.
Features:
  • 3/8" Thick machined flanges to prevent warping
  • Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating
About Doug's Headers

Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality muscle car performance headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.

Downloads:

Download Name File Size
D668.pdf385.89KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
Ford Fairlane 1966 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-67 Fairlane Emission Vehicles in 50 States
Silver
Ford Fairlane 1967 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-67 Fairlane Emission Vehicles in 50 States
Silver
Ford Fairlane 1968 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Automatic Transmission Only
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-70 Fairlane Emission Vehicles in 50 States
Silver
Ford Fairlane 1969 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Automatic Transmission Only
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-70 Fairlane Emission Vehicles in 50 States
Silver
Ford Fairlane 1970 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Automatic Transmission Only
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-70 Fairlane Emission Vehicles in 50 States
Silver
Ford Falcon 1966 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-68 Falcon Emission Vehicles in 50 States
Silver
Ford Falcon 1967 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-68 Falcon Emission Vehicles in 50 States
Silver
Ford Falcon 1968 5.0L / 302 / V8
4.7L / 289 / V8		 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-70 Falcon Emission Vehicles in 50 States
Silver
Legal for use on 66-68 Falcon Emission Vehicles in 50 States
Ford Falcon 1969 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-70 Falcon Emission Vehicles in 50 States
Silver
Ford Falcon 1970 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-70 Falcon Emission Vehicles in 50 States
Silver
Ford Maverick 1971 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Maverick 1972 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Maverick 1973 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Maverick 1974 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Maverick 1975 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Maverick 1976 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Maverick 1977 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 71-74 Maverick Emission Vehicles in 50 States
Not Legal for use on 75-77 Maverick Emission Vehicles in 50 States
Silver
Ford Mustang 1964 4.7L / 289 / V8
4.3L / 260 / V8		 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 64-68 Mustang Emission Vehicles in 50 States
Silver
Legal for use on 64-65 Mustang Emission Vehicles in 50 States
Ford Mustang 1965 4.7L / 289 / V8
4.3L / 260 / V8		 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 64-68 Mustang Emission Vehicles in 50 States
Silver
Legal for use on 64-65 Mustang Emission Vehicles in 50 States
Ford Mustang 1966 4.7L / 289 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 64-68 Mustang Emission Vehicles in 50 States
Silver
Ford Mustang 1967 4.7L / 289 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 64-68 Mustang Emission Vehicles in 50 States
Silver
Ford Mustang 1968 5.0L / 302 / V8
4.7L / 289 / V8		 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-73 Mustang Emission Vehicles in 50 States
Silver
Legal for use on 64-68 Mustang Emission Vehicles in 50 States
Ford Mustang 1969 5.0L / 302 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-73 Mustang Emission Vehicles in 50 States
Silver
Ford Mustang 1970 5.0L / 302 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-73 Mustang Emission Vehicles in 50 States
Silver
Ford Mustang 1971 5.0L / 302 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-73 Mustang Emission Vehicles in 50 States
Silver
Ford Mustang 1972 5.0L / 302 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-73 Mustang Emission Vehicles in 50 States
Silver
Ford Mustang 1973 5.0L / 302 / V8 Use recommended C5ZZ16A052E "export brace" if shock mount center to center dimension is less than 33 3/4"
Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-73 Mustang Emission Vehicles in 50 States
Silver
Ford Ranchero 1966 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-67 Ranchero Emission Vehicles in 50 States
Silver
Ford Ranchero 1967 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-67 Ranchero Emission Vehicles in 50 States
Silver
Ford Ranchero 1968 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-71 Ranchero Emission Vehicles in 50 States
Silver
Ford Ranchero 1969 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-71 Ranchero Emission Vehicles in 50 States
Silver
Ford Ranchero 1970 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-71 Ranchero Emission Vehicles in 50 States
Silver
Ford Ranchero 1971 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-71 Ranchero Emission Vehicles in 50 States
Silver
Ford Torino 1968 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Ford Torino 1969 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Ford Torino 1970 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Ford Torino 1971 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Ford Torino 1972 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Ford Torino 1973 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Ford Torino 1974 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Torino Emission Vehicles in 50 States
Silver
Mercury Comet 1966 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-68 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1967 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 66-68 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1968 5.0L / 302 / V8
4.7L / 289 / V8		 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Legal for use on 66-68 Comet Emission Vehicles in 50 States
Mercury Comet 1969 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1971 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1972 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1973 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1974 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1975 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1976 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Comet 1977 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-74 Comet Emission Vehicles in 50 States
Not Legal for use on 75-77 Comet Emission Vehicles in 50 States
Silver
Mercury Cougar 1967 4.7L / 289 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 67-68 Cougar Emission Vehicles in 50 States
Silver
Mercury Cougar 1968 5.0L / 302 / V8
4.7L / 289 / V8		 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-69 Cougar Emission Vehicles in 50 States
Silver
Legal for use on 67-68 Cougar Emission Vehicles in 50 States
Mercury Cougar 1969 5.0L / 302 / V8 Does not fit with C-6 transmission.
On Power Steering Cars, Installation requires power steering bracket PN H7609.
Vehicles with Air Injection heads will require grinding of the header flange to fit.
Will not fit GT40 "P" heads.
Full-length
Metallic Ceramic Coated
with Floor Shifter
Legal for use on 68-69 Cougar Emission Vehicles in 50 States
Silver

Specifications:

Collector Attachment 3-Bolt Flange
Collector Diameter 2.5 IN
Collector Port Diameter 2.5 IN
Cylinder Head Port Shape SAP
Design Full-length
Finish Metallic Ceramic Coated
Flange Thickness 0.375 IN
Gasket Or Seal Included Yes
Gaskets Included Yes
Grade Type Performance
Header Material Steel
Header Style Full-length
Material Steel
Mounting Hardware Included Yes
Oxygen Sensor Port No
Part Type Exhaust Header
Port Shape SAP
Primary Tube Outside Diameter 1.625 IN
Proposition 65 www.P65Warnings.ca.gov
Sheen Level Semi-Gloss
Tube Wall Thickness 16 GU
Warranty Time 24 Months

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Doug's Headers 1964-77 Ford/Mercury Small Block with Floor Shift 1 5/8" Long Tube Header with Metallic Ceramic Coating D668:
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