If the 230 will turn, I could have it running in about an hour, with little or no investment beyond a set of fresh spark plugs, and maybe a set of points. At least that approach would tell you whether it would need major repairs. A 250 6 cylinder would be a bolt-in replacement, and a 292 would only involve relocating one motor mount bracket and a little bit of exhaust plumbing modification.

The 283/327/350 swap would involve about the same amount of work no matter which one you pick, as long as the 283 is a 1958 or later model with the side engine mount attachment bosses. Earlier 283's or 265's wouldn't bolt in without some major modifications to accomodate the earlier 4-point engine mount system.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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