First post I think, but I've been lurking and learning from this site for a few years now. A bit of background on my situation:  I purchased a way too rusty 67 Fairlane sans motor/trans in Oct '20. Plans were a quick 390/toploader beater style build. Then I attended a Texas mile event. So now it's a full build with a 447 stroker kit from Survival, TFS heads from Mr. Lykins,  Victor efi. Machine work on the questionable 390 block has not been started. Suddenly, without warning, I find this at an estate sale. I spot cross bolt mains, screw in freeze plugs. Side oiler rib machined off, so a boat motor. I immediately strike a deal with the agent who insisted it was a 460 block. Even if it was junk, I had to have it. This post got long, and I swear I'll get to my conundrum.