I have done some more research on changing wheels.

Yes there are adapters made to convert small 10 lug to large semi size 10 lugs. They are about $800 for a set of 4.

If you do buy the adaptors the narrowest wheel you can easily get that fits is a 22.5 X 7.5".
I have not measured to see how some 10R22.5" tires will fit, probably almost to big to fit in the front. May fit fine in the back?
9R22.5 tires should fit no problem although I would perfer to run them on narrow rims, but they can be run on the 7.5" rims if you want.

It may be possible to have some 22.5 X 6.75" wheels made with the large 10 lug to use with the adapters.
Although if I am going to make or have wheels made I think I will try for some small 10 lug pattern 22.5 X 6.75" wheels.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-