on the front u can get 2 inches by cranking the torsion bars, and in the back you can add a leak or have to get a different shackle because blocks lower our trucks. if its a first gen. the axle sets on top of the leak spring instead of under it. i know the belltech 6400 shackle will lift the rear about 2 inches, they are meant to lower a Chevy but they lift us.