Uh-Oh! Cam Bearing Time!!!
Ima’ get in trouble for this one, but if I were into it that deep I would be upgrading to a 318 block and pistons. But that’s just because I have a later model 318 that was gifted to me. Of course the first choice (at least to me) would be a bare 340 block to put all the 273 internals into, but that’s a budget breaker.