I can't help you on the particulars...but food for thought, if it were me, and I were doing a rear end swap, I wouldn't even bother with the 60, I'd either go with the 9", which is damn near as strong and waaaaay more aftermarket support...just gotta worry about the 8 vs. 5 lug difference. Or...my preference would be to bump up to a D70...a little heavier, and needs some shaving, but a much stouter axle IMO. And in all actuality, if you don't care about GM parts under your blue oval, go with a corporate 14 bolt. IMO, price differences are negligible.