Too bad about not wanting the 4200, as it comes with most of what it sounds like you want (or might want) already screwed to it.
I'm not knocking wanting something that looks period appropriate, but if I were building one to drive alot (ie stick the key in and go) I would stuff the late model mill in and keep the hood shut if the newness of the engine was inappropriate for whatever event it was at.
But that's me.
If you can't go that route, grab a 292 and a 700R or a umm, drat, I'm spacing the other 4 speed OD auto, but either one should help.
Good luck, sounds like a neat project.
