19.5” 8 lug on 6.5” bolt circle dual wheels are still reasonably easy to find.
I have a set on my GMC, they fit nice and roll real nice.
Not all will fit though, some have the dish center that are more cone shape than rounded, the rounded kind should fit (and look better), not the cone shape.

•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-