with the ball joint spacers i would say 2" spacer MAX! along with some low profile bumpstops you can get about 2.5" with cranked torsioned bars. i have the 2.5" spacer or "3 inch" lift in the front of mine, and you would not belive the amount of custom work i've hav to do to get the geometry close to stock.. diff drop rear mount, custom front diff drop, ectended bumpstop tops, sway bar drop, wheel spacers, and a major allignment issue unless you find a way to drop the lower arms an inch or two... the body lift for autos is the same minus the little brachet. i've seen people take two stock brackets and wld them together and it worked fine. belive it or not i have a friend with a 1" body lift and low profile upper bumpstops,wwith LC coils, and he's running 35"!!! he rub a dub dubs here and there but alot less than expected