I swapped axles in my 1 ton, a Dana 70HD for the rear, and special wheels to make it fit. Then narrowed an axle for the front. Disc brakes front and rear, and gear choices as fast as 3.54.
http://rides.webshots.com/album/484062061lhMQfr

These axles are now under my 2 ton, which is a better fit, and was the plan from the beginning.

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
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-