This is a used Left Side Corvette / Chevy  2" exhaust manifold, GM Number 3733975. They were used on 1957 Corvettes and Chevy's of that vintage.  Were also used on many other GM Cars and Trucks of that vintage. ---- This is a Very Nice  manifold, with no damaged or welds. Manifold is painted with  hi temp 1200 degree paint------(check the pictures). It is ready to bolt on. 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.