Dana 60 5x4.5 full floater?

Dont know about a Dana 60 giving easier gear changes. If I remember right it was a one year only deal in the trucks so they are scarce.

If easy gear swaps is what you are after an 8 3/4 rear would be a better choice. Some 72 to 75 or so pickups came with 8 3/4 5x 4.5 pattern.