I took the yellow Zinamobile down to the guy's shop yesterday so he could take a look. Seems very doable, he's going to start tracking down the parts he needs now. He has quite a collection of vehicles there himself that he's working on. He had a 50-something Chevrolet pickup, a 70 Nova, 70 Chevelle, 87 Buick Grand National, 53 Ford pickup, 48 Ford pickup, and probably something I forgot. I got the impression that he knows what he's doing anyway.
He also spotted an oil leak at the back of the intake manifold. He thought it was the intake gasket but the the sending unit for the oil pressure gauge was right there too, so I said maybe the oil line is leaking. We wiped it off with a rag and sure enough, the fitting was leaking where the plastic line went in. That's way better than having the manifold gasket leaking.
He offered to try to tighten it but I said "no, I'll do it at home so when I break it it'll be at home". So when I got home I took the line loose, and it was crimped and crushed where the ferrule goes over it. I just cut the end off with my Old Timer and went to NAPA. Told them I just needed the ferrule but to "give me 3 or 4 because we know I'm going to drop 2 or 3 of them and lose them".
Turns out I only dropped 1 and lost it, it's either in the driveway or on the truck somewhere. But I re-attached the oil line and it appears to be ok now.