20" rim, 5 X 6 5/8 Budd pattern
 

Does anyone know a source for good used or rebuilt wheels. Ideally I would like to have a radial rim put onto the center.

Thanks for any help, I keep striking out on other forums.

5x6 5/8 ???

do you mean 6x5.5? Never heard of a 5x6 5/8's pattern... Would be pretty big...

Yep they are big. Lug nuts are 1 1/2 inches. The holes for the 3/4 studs are probably an inch plus with a 45 degree bevel to them.

They were on old GM school buses (small ones) some 40's Ford commercial trucks and the flat fender Dodge Power Wagon and military trucks.