One very nice used original GM 1966 Chevrolet Chevelle SS 396 El Camino 396 all models with the ultra rare California K-19 A.I.R. system, drivers side exhaust manifold. The manifold casting number is a 3883999 with a K 11 5 date code. There are no issues, other than the one stud missing. The manifold will be carefully packaged and fully insured for shipping.