The Detroit Speed, Inc. Stainless Steel LS Headers feature a 1-7/8" primary tube diameter with 4-way merge collectors featuring V-Band clamps. These headers are designed and engineered for LS engines in the 1967-1974 Camaro/Firebird or 1968-74 Nova Hydroformed Subframe. Each header features a O2 sensor bung in the collector. These headers are designed for performance, maximum ground clearance, and a clean engine compartment appearance. The Detroit Speed, Inc. Stainless Steel LS headers are durable, attractive, and come with the necessary clamps to make installation easy. All stainless steel headers are exclusively manufactured by Pro Fabrication for Detroit Speed, Inc. suspension applications. These headers are made with high quality material here in the USA.