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Butler Performance Inc. - Doug's D-PORT Headers
Identifying headers can be an issue. Here is info to help get the correct headers for your application. The d-port head looks like a set of "D"'s mirroring each other, in other words back to back. The round port actually looks like a sideways "D" that is pointing upwards. This is not a "D-Port" head but a round port instead. Doug's Headers fit both cast iron D-Port and Edelbrock D-Ports heads.
Browse Doug's D-PORT Headers Products
Items 1-10 of 10
Description: Pontiac 1965-1968 326-455 Catalina & 2+2, Grand Prix, Bonneville D-Port Headers, 326-455 1 3/4" Pipe 3" Collector (Ceramic Coated)
Item #: DHE-D521
Condition:
New
Price: $1,109.95
Description: Doug's Headers D570 1 3/4" 4-Tube Full Length Header Pontiac Firebird 326-455 70-81 Metallic Ceramic Coating
Item #: DHE-D570
Condition:
New
Price: $979.95
Description: Pontiac 1965-1968 326-455 Catalina & 2+2, Grand Prix, Bonneville D-Port Headers, 1 3/4" Pipe, 3" Collector (Black)
Item #: DHE-D521B
Condition:
New
Price: $849.95
Description: Pontiac 1967-1969 326-455 Firebird D-Port Headers 1 3/4" Pipe, 3" Collector (Black Painted)**Requires a 90 Degree Oil filter housing**
Item #: DHE-D569-B
Condition:
New
Price: $799.95
Description: Doug's Headers D569 1 3/4" 4-Tube Full Length Header Pontiac Firebird 326-455 67-69 Metallic Ceramic Coating **Requires a 90 Degree Oil filter housing**
Item #: DHE-D569
Condition:
New
Price: $1,019.95
Description: Pontiac 1970-1981 389-455 Firebird, T/A D-Port Headers 1 3/4" Pipe, 3" Collector (Black Painted)
Item #: DHE-D570-B
Condition:
New
Price: $769.95
Description: Doug's Headers D590-R 1 3/4" 4-Tube Full Length Header Pontiac GTO 326-455 68-72 Black Painted
Item #: DHE-D590-B
Condition:
New
Price: $789.99
Description: Pontiac 1968-1972 389-455 GTO, Lemans, Tempest D-Port Headers 1 3/4" Pipe, 3" Collector (Ceramic Coated) *May have to reposition brake proportioning valve on dr. side frame rail*
Item #: DHE-D590
Condition:
New
Price: $959.95
Description: Doug's Headers D564-R 1 3/4" 4-Tube Full Length Header Pontiac GTO 326-455 64-67 Black *May have to reposition brake proportioning valve on dr. side frame rail*
Item #: DHE-D564-B
Condition:
New
Price: $729.95
Description: Pontiac 1964-1967 389-455 GTO, Lemans, Tempest D-Port Headers 1 3/4" Pipe 3" Collector (Ceramic Coated) *May have to reposition brake proportioning valve on dr. side frame rail*
Item #: DHE-D564
Condition:
New
Price: $959.95
Items 1-10 of 10