Patriot Exhaust H8046-1 1-3/4" Tri-5 Exhaust Header for Chevrolet Passenger Car/Wagon LS1 55-57 The popular 55-57 Chevy passenger car headers for small or big block and LS1 / LS6 swaps Durable 18-gauge tubing Comes complete with gaskets, header bolts and collector reducers Available in three finishes; uncoated for individual customizing, chrome finish for that show quality shine or with Patriot's very popular metallic ceramic coating Limited one year warranty