a rear 60 will require a carrier change for 35 spline shafts, if you are looking for that kind of strength. gear options as low as 7.17.

14 bolt you can go to 5.13 if you can find them available and 5.38's are allegedly on the way too.

Ford 9" has very good all around aftermarket and can be built as tough as your wallet will allow.

88 Troop - Posing yard art