Dana 60 S60 or Ford 9"
I am personally not a fan of 9". Most ppl have several 3rd members so they can just swap them and have a different ratio, so that can get expensive really quick. An s60(strange) isn't all that hard to swap ratios because of using side abjusters. I would do the s60(strange) and not a moser one because mosers still shim under the side bearings.