got the back slammed... finally and i think my headers rub the ground... lol. I used 2 inch springs in the front and jeep in the back, but i think i got at least 4 inches. The truck is level, but i think i'm either going to put coilovers on the back, or put a block on the frame to raise it an inch or so. Other thought is 20's on the back and 18's in the front