Hey SBC pros. need some help. I JUST bought a 57 Chevy 6400. It has a small block that was implanted at some point in its life but not recently. It is orange with the Chevrolet script across the drivers valve cover. has a generator, ram head exhaust manifolds, single BBL carb. casting number is 3970010 which is either a 302, 327, or 350. the VIN number is C8Z143718 which im unable to decode and that's what i need help with. thanks