I bought a 1955 235 last weekend that the man had in a 56 Chevy. He pulled it in 77 and stored it in the garage since. With the motor I received a dual carb intake and a dual exhaust manifold. It appears the exhaust manifold is from a 55 Corvette. There were only seven six cylinders built out of 700 Vettes in 55. Someone did a not so purdy, but effective repair at some point. I don't see why a good metal worker/welder couldn't get that looking nice again.