Swapped in the "new" 52's, the 4 leaf pack. I had a 5 leaf back and even with the overload they were way to flat and super stiff. So I got some 4 leaf packs out of a PU. I also added some zero rates and pushed the axle 1.5" forward. My lift is perfect, its about 1/2" higher in the rear. My favorite part is the 90* approach angle when turned 8) And the money shot, just need to trim off the frame inf ront of the hanger.