Bob,
Yes, my rims came off of a 94 3500HD. The hole spacing is 10 holes on a 7.25" diameter with a 5.25" center hole.
About my earlier comment on the fenders, I had in my mind you were talking about an AD truck, I know they are the same size for 1.5 and 2 ton. But I don't know much about the older trucks like yours.

•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-