American Racing GTO 2004-06 LS1/LS2 1 7/8" x 3" Headers, 3" X-Pipe & Connection Pipe, With Cats. American Racing now offers the 2004-06 GTO Header Systems. Manufactured using the highest quality...

American Racing GTO 2004-06 LS1/LS2 1 7/8" x 3" Headers, 3" X-Pipe & Connection Pipe, No Cats. 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...

Stainless Works 2005-06 GTO headers. CNC mandrel bent 1 3/4" primaries, , CNC laser cut 3/8" flanges, 3" collector. Includes 3" pipes to connect to factory 2 bolt flange. Includes 3" High Flow Cats...

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...

Stainless Works 2004 GTO headers. CNC mandrel bent 1 3/4" primaries, , CNC laser cut 3/8" flanges, 3" collector. Includes 3" pipes to connect to factory 2 bolt flange. High flow metal matrix...

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...

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...

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...

  Hooker LSX Cast Iron Exhaust Manifolds, Black Ceramic Coated       Hooker cast iron exhaust manifolds have been designed to hug close to the engine block s

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...

Flowtech LS Turbo Headers-Ceramic Coated LS Turbo Headers (Up and forward) 1-3/4" 409SS GM 4.8/5.3/6.0L V8 Ceramic Coated OVERVIEW: Flowtech Headers are the perfect combination of quality and...