The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Noisy rear axle in a 62 C-10, what's a good swap?

The 63-82 12 bolt GM truck would be a good swap, if you do end up swapping. 63-69 was the same width and 6 lug, 70 some were slightly wider, 71 and up were all wide and had 5 lugs (2wd). Lot's of aftermarket stuff like posi carriers available, and 3.07, 3.42, and 3.73 gears are commonly found used.

Although, I'd agree that just finding another third member for your Eaton will probably be the easiest route. Just bolt it in your housing and go.