The original Eaton axle and the 14 bolt Cab and Chassis axle are within 1/8” of same width, 62-5/8”. Original tires and wheels work great, no reason they wouldn’t. Later model wheels will too, (not real modern though) they’re usually about 1/2” inset from center of wheel.

•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-