Earls Straight -3 AN Bulkhead - 983203ERL exhaust-tips 7 V8 1975 - 1977

7 V8 1975 - 1977 Pontiac Firebird Base 400/6

Headers will work with 10" or 10

Smooth transition 1-5/8” mandrel- bent primary tube diameter for smooth flow and increased exhaust velocity resulting in improved torque and horsepower over factory manifolds

The glass reinforced PTFE seals are compatible with gasoline

This black anodized bracket is multi-adjustable to work on Holley 4500 model carburetors

Earls Straight -3 AN Bulkhead - 983203ERL exhaust-tips 7 V8 1975 - 1977Overview: Blue Anodized Lightweight Aluminum Construction. Available for Any Plumbing Situation And Many Custom Applications. Features: Made in the USA Available for Any Plumbing Situation And Many Custom Applications. Blue Anodized Aluminum Application: Year Make Model Submodel Engine Size Universal Specs: Adapter AN Size ( A ) 3 AN MALE Adapter AN Size ( B ) 3 AN MALE Adapter Type Straight Bulkhead Brand Earls Emission Code 5 Finish Anodized Blue