I have a Dana 60 from a 3/4 ton ford van with 3.54 gears. It is an 8 lug semi floating with 1.5" 35 spline axles (the largest available for the Dana 60). I was told it was about the right with, but have not measured it.
If you are interested I'll go take a look?

•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-