upper control arms fron a first gen montero will give a 1-2" suspension lift and is a bolt on. sway a way did make stronger torsion bars that can be cranked up to give a 3" lift - someone on here said they found some. If you crank the old stock ones up, they will sag quickly from age and abuse. I also saw a post about montero torsion bars being swapped but I am not sure if that works or which ones. Try 4x4.com for more info on suspension lifts.