Forgive me, but are you serious, you need a lift to prevent the front drive shaft from hitting the downpipe? Wow, don't go over a 3" lift then, because then your drive shaft will hit the exhaust pipe (unless that was relocated.) I'm at a 4" lift, and I already tore my drive shaft boot on the exhaust pipe when my suspension dropped while wheelin'. I just purchased a new front CV driveshaft that is thinner than the stock one to help deal with that. Ugh, the mods never stop once you lift it to correct issues, because somehow Chrysler didn't seem to think that ONLY EVERY JEEP OWNER ON THE PLANET WANTS TO LIFT THEIR JEEP!