When I bought my '88 BII it had a 3-inch body lift and the body mounts/bushings were completely trashed (in addition to the body being misaligned on the frame). I replaced that with a 2-inch body lift and new mounts/hardware from Duff.
After replacing EVERY suspension bushing, I then did the complete Skyjacker system (1.5-2 inch suspension lift) and replaced the leaf springs with new ones (which needed the Skyjacker helper spring to properly level the ride height).
What REALLY chapped my backside was my camber was not even remotely in spec, even with 3-degree cams, after the install, which required my to buy their axle and radius arm pivot drop brackets, which was NOT inexpensive. While those brackets are part of the higher-lift lift kits I had to purchase them separately to get the alignment within spec.
Without double checking I'm pretty sure I'm running 31x10.5x15 KO2s and they look, fit and ride awesome. Now that the alignment is done I can literally drive on the interstate with a finger on the steering wheel; it's THAT stable and considering the extremely short wheelbase, smooth.
I live in the extreme SW AZ desert and I needed my BII handle on/off road equally well and although the path to where I am now wasn't straight, I wouldn't change anything I did to get to where I'm at now...