The link is the Accuride wheel catalog in PDF.
The important part is they are still in the catalog, part number 29015.

Call around and see if your local tire shop can order them, and try Randal at central truck and Trailer, he could order bigger wheels from them, I expect he can get the small ones just the same.

Grigg

•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-