the driveshaft under your 88 should work, though it'd be tight and you should check clearance before driving all over the place. i'd plan ahead and at least find a shop that can shorten a driveshaft for you, just in case. If you can get away without shortening, it'll be beneficial for the lift. It'd be best if you can wait til the lift before swapping in the axle, if that's possible.
new Mopar perches are like 15 bucks at the dealership and any muffler shop can burn them on for cheap. :thumbsup: