This is a superr nice Corvette / Chevy 2" exhaust manifold, GM Number 3872778. They were used on 1966 thru 1968 Corvettes and Chevys of that vintage. Were also used on many other GM Cars and Trucks of that vintage. ---- This is a super nice manifold, with no damaged or welds. Just have to remove the old AIR retainers. Studs are perfect and manifold is painted with hi temp 1200 degree paint------(check the pictures). Always check your references. --- -----Key Words: Posi / Dual Quads / Carter Carbs / WCFB / Vette / FI / AFB / GM / AC Delco / Borg Warner / 283 / 327 / Muncie / 4-Speed / Chevrolet / Delco Remy / Wonderbar / AIR / Rat Rod.