A 3" lift of your choice, 33" inch tires of your choice, and wheels with backspacing over 4" if your going to run a 12.5" wide tire. You may also need to either drop your transfer case skid, do a MML or get a sye and new rear drive shaft with adjustable upper control arms for the rear.
That's the basic way to do it, you can also do a smaller lift and squeeze some 33's in there, might take a little modification to the wheel wells and fenders to get it to work. I know some people run 33's on 2.5" of lift, just need to adjust the bump stops to keep the tire from rubbing and keep the shocks from bottoming out.
1999 Black TJ I6 Auto - Rough Country 2.5" lift, 31x10.5x15 Goodyear Duratracs
2000 Green TJ I6 5spd - Stock