1966-91 GM Truck Long Tube Headers - Stainless Steel. Made from high grade stainless steel, with 1-5/8" tubes, 3/8" flanges and 3 collectors, featuring a polished finish. Kit includes gaskets, collectors and bolts.Fit: 1966-91 GM Trucks 2WD & 4WD (see years and models bellow). Mounting Hardware & Gaskets Included. Will not fit angle plug heads. Must modify exhaust to retain factory catalytic converters. May require clutch linkage modification. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Exhaust & Emission Systems\Manifolds & Headers". The seller is "hotrodchrome" and is located in this country: US. This item can be shipped worldwide.