Overview:Flowtech Exhaust products are the perfect combination of quality and value. We are proud to offer these Universal LS Swap Headers with 1-5/8" primaries and 2-1/2" collectors. These headers are made of 304 stainless steel and are available in both natural and polished finishes.Features: Universal rear exit shorty headers for GM LS1, LS2, LS3, LS6, LSX engines 1-5/8” mandrel bent primary tubes and 2-1/2” collectors 3/8” thick header flanges for a leak-free seal Premium gaskets and collector hardware included 2-1/2” reducers with oxygen sensor bungs included Available in natural 304 stainless steel and polished 304 stainless steel Application: 1998-2015 Chevrolet Camaro 1997-2013 Chevrolet Corvette 1998-2002 Pontiac Firebird 2001-2004 Avanti II 2004-2007 Cadillac CTS 2006-2009 Chevrolet Trailblazer 2014-2017 Chevrolet SS 2004-2006 Pontiac GTO 2005-2006 Chevrolet SSR 2009 Pontiac G8 Specs: Application GM LS Engines Brand Flowtech Collector Diameter 2.50 inch Emission Code 4 Engine GM LS Finish Polished Header Finish Polished Header Style Shorty Primary Tube Dia. 1-5/8 inch Product Type Headers Tube Material 304 Stainless Steel Warning California Proposition 65