A Dana 60 will be quite undersize for the weight of the truck. A Dana 80 at a minimum, possibly something a little larger would be ideal. Something about the same physical size and weight rating as the original.

What sort of timeframe and budget do you have, its beginning to sound like a whole lot of work and expense with a disesl conversion and all on top of a truck restoration.

•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-