Originally Posted by AntiBling
...I'm just wanting hoping someone else has done this and already knows a wheel from a later model that is suitable with minimal cutting of the center.

Absolutely zero cutting if you use 8 lug 19.5" wheels center all; just bolt them on your truck and drive. It'll take a little searching but it's by far the easiest method of running tubeless wheels on these old trucks.

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-