Original GM Exhaust Manifold RH, in used condition. GM part numbers 1408 1238. The "Chevrolet By The Numbers" book says it is correct for all small block Chevrolet and Corvettes that were made before 1984. It is for the right side (passenger side), and bears the casting number GM 1408 1238. The book also identifies it as "Ram style manifold, with and without A.I.R." All upper mounting points look good; one lower mounting stud is broke off at the flange, and will need drilled out and tapped. The date code on the manifold is "31/0143". Very good overall condition. $45. Will ship!