If you can find a machinist who isn't afraid to do a little creative whittling, it's possible to adapt a 235 rotating assembly to a 216. That eliminates the Babbit rods and the spray oiling system, and uses a higher volume oil pump designed for a 54/55 235 with the straight oil pan rail on the passenger's side. (Melling M-29) With a LOT of modification, that "216" can become a 258 that looks completely original from the outside.
Jerry
