For Chevy Small Block V8 4-1 Design 2pcs Silver Coated Stainless Steel Exhaust Header Kit Made From High Quality T304 Stainless Steel For Strength & Durability Constructed With TIG Welded CNC Machine Flange All Tubing Is Mandrel-Bent Comes With Reducer and Metal Gasket Note: Headers are Semi Universal for Small Block V8 Engine (Compatibility Chart is for Reference Only)