Dana made some 60-1 for pickups with both 3.30(maybe 3.37 ratio ) and 3.0 ratios, there is one with the 3.0 ratio in one of our local junkyards, I think it came out of a early 1st gen(1988-1989) Dodge Pickup with a diesel Cummins engine in it. Not sure about which spline count axles are in those stock and which spool or posi will fit in them also I thought about buying it to have for a future project that would be driven a lot in across counrty long trips, maybe not IHTHs