The 1 ton axle is significantly smaller/lighter weight than the 2 ton axle.
I would not reduce axle capacity and add more front end weight.

There are a few options for swapping or installing disc brakes on the 2 ton axle, one method is pretty well covered in a sticky thread in this section.

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-