What would you gain by using parts 6 years newer but still old, and not likely an easy swap?
My first guess is it sounds like a lot of work for no appreciable gain.

Find out what the wheels are and bolt pattern, if 22.5" 5/10 lug they'll swap to the 51 with some hub bushings.

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-