My guess is it has a 2 ton front axle to get the 6 lug Budd wheels, and rear is likely original 1.5 ton.
Tubeless wheels were standard in 56, although many ordered the familiar 20" tube type.

If you run across any more of those 22.5" wheels with 10 lug on 7.25" circle I'm always looking for some.

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-