Kooks, 2004-2006 Pontiac GTO LS1/LS2 5.7L/6.0L 1-7/8" x 3" Stainless Steel Longtube Headers with O2 Bungs, O2 Extensions & Gaskets. Call or email for shipping quotes.   1 7/8 in. x 3 in. Stainless Steel Longtube Headers with O2 Extension...

  Hooker LSX Cast Iron Exhaust Manifolds, Black Ceramic Coated       Hooker cast iron exhaust manifolds have been designed to hug close to the engine block so they fit into a wide variety of replacement and engine–swap...

Hooker LSX Cast Iron Exhaust Manifolds, Bare     Hooker cast iron exhaust manifolds have been designed to hug close to the engine block so they fit into a wide variety of replacement and engine–swap applications. Their contoured design...

American Racing GTO 2004-06 LS1/LS2 1 7/8" x 3" Headers & Connection Pipe, No Cats. SELECT YEAR APPLICATION BELOW BEFORE ORDERING! American Racing now offers the 2004-06 GTO Header Systems. Manufactured using the highest quality US...

American Racing GTO 2004-06 LS1/LS2 1 3/4" x 3" Headers & Connection Pipe, No Cats. SELECT YEAR APPLICATION BELOW BEFORE ORDERING! American Racing now offers the 2004-06 GTO Header Systems. Manufactured using the highest quality US...

American Racing GTO 2004-06 LS1/LS2 1 7/8" x 3" Headers & Connection Pipe, w/ High Flow Cats. SELECT YEAR APPLICATION BELOW BEFORE ORDERING! American Racing now offers the 2004-06 GTO Header Systems. Manufactured using the highest...

American Racing GTO 2004-06 LS1/LS2 1 3/4" x 3" Headers & Connection Pipe, w/ High Flow Cats. SELECT YEAR APPLICATION BELOW BEFORE ORDERING! American Racing now offers the 2004-06 GTO Header Systems. Manufactured using the highest...