I've been searching for a 235 to put in my '53 sedan. Found a guy that has one for $200. But it has center bolt valve covers like a 216. He says it's a 235 out of a '53. My question is, are these any better than the 216? Are they babbit engines with the splash type oiling systems or are they upgraded? He sent me the cast number off the block, have not had a chance to search for a decoder yet.