labwork For CHEVY Monte Carlo 1964-1988 LS1 LS2 LS6 LS7 Engine Conversion Swap Headers

Item is 100% New, Never used or installed. 1 1/2" Primary Tubes 2 1/2" Outlet 3/8" Thick Head Flanges Works with LS1, LS2, LS6, LS7 engines Works with 4.8L, 5.3L, 5.7L, 6.0L, 6.2L Engines Comes with exhaust starter tubes with o2 sensor locations Made from Stainless steel with CNC machine flanges with TIG and MIG welded construction. For off-road, competition/racing use only. This product is not intended to be installed on vehicles registered for highway use. This product is NOT for sale or use in California. Product does not come with installation instructions, please refer to a shop/factory manual for installation. Item Specifics Brand Labwork Surface Finish New Compatible Make LS1, LS2, LS6, LS7 engines,4.8L, 5.3L, 5.7L, 6.0L, 6.2L Engines Compatible Model LS1, LS2, LS6, LS7 engines,4.8L, 5.3L, 5.7L, 6.0L, 6.2L Engines Warranty 1 year Outlet Size 2 1/2" Primary Tube Size 1 1/2" Head Flange Thickness 3/8"  Outlet Flange Thickness 2 1/2