Specifics and Features: Header Inlet / Outlet Size (IN):1-7/8" OD / 3" OD Made of T-304 Stainless Steel Fits Chevy LS V8 Engine swaps only 6-Bolt Exhaust Outlet Flange 16 Gauge Wall Piping 9mm Exhaust Manifold Flange Thickness, 8mm Collector Flange Thickness and Metal Gasket Included Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq. Includes: 1 x Set of Exhaust Headers Hardware as Shown in the Picture Above Notes: 100% Brand New Professional Installation is Highly Recommended For LS V8 Engine Swaps only Installation Instruction is NOT Included .
eBay