Originally Posted by Grigg
The 22.5" rims with 10 lugs on 7.25" bolt circle (like your old wheels) will have 5.25" center hole (larger than your original wheels).
Bushings can be made to solve the center hole problem.
I saw something about adapter inserts that seems good, since I would be using the retainer plates that came on the truck in the first place to hold the adapter in. Wouldn't it be feasible to actually have a disc welded into the center hole and re-bored to 4.75? Seems like a good machinist with an engine lathe could do that.

Finding the wheels is the larger problem. I would not say they are rare, but they certainly are uncommon and take a fair amount of looking to scrounge up..

Your cheapest and fastest option is probably to find more original wheels that are not rusted. However from looking at other threads folks are having a hard time with that too, I'd suggest looking in the mid west for less rust.
Grigg, that truck came from the midwest originally. Finding good rims does seem to be a problem.
Grigg

A day without laughter is a day wasted- Charlie Chaplin
When wrestling a grizzly bear, you have to keep at it until the bear gets tired, not when you get tired.
1948 Chevy 2-Ton