i did ome heavies front and back, 1.25" body spacers from 4 crawler, with the 5 3/8" shackles from 4+ all the way around, and 1.5" wheel spacers with 8" wheels from summit. to keep the front from still rubbing i had to lower the bump stops a bit. also, all of this stuff changed both front and rear DS angles to the point that I had to get a double cardan for the front, and fix the angle on the rear.
if I had to do it over again i woulda gone SOA with some flat springs...
truck sits nice now, drives straight (4 degree shims on the front for caster correction), and is stable at 90mph, but is pretty stiff on the trails.
on the most dificult trails here in Co, it rubs in the front still.
hope this helps.