I was in the Chicago area last week. My brother turned me on to a guy parting a 71 J4000 pickup. Went and looked and sure enough, a Dana 60-2 rear. Semi floater, 5 on 5.5" bolt pattern, 4.10 gears, and 1.5" - 35 spline axles. Picked it up for $125. It has some rust, so the BOM isn't legible, but that's OK. Now to have it narrowed to 56" for the rear of my CJ.