They may or may not fit over the rear drums on the old truck, you’d have to test fit and see.
Tires would be 8R19.5 at 32-33” tall.

Alcoa did make aluminum 19.5” wheels with 10 lug on 7.25” bolt circle, but not any time recently.
I’m not aware of any vehicle they came on standard, possibly some motor home. In any case they’re real hard to find.


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
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-