I'm going the same route with my '77 Datsun.

Have you checked out Summit's Wheel Vintiques selection? They're pretty affordable, and you can get the rings and dog dishes there, too.

I've got ONE old 14" steelie from my Datsun with a dry-rotted tire on it if you want it. If I had to guess I'd say it's a 14x6. Surface rust and all that, but it's yours if you want it.