Just installed the c-notch and a 1 inch lowering shackle. They had to weld in shock extenders for my air shocks. Rides great. Had to actually go lower in the rear to raise up the rear to be level so I could use the air shocks/notch so it wouldn't bottom out. With just the flip kit installed, and no air, the bed sad almost level(1/2 inch higher than front) and would bottom out like crazy. So now it's perfect. Without air in the shocks, the pumpkin actually hits the bed before the axel/frame. If I want to go any lower I have to cut out the bed, and I don't think in going to do that. I think in done with suspension. 6in front 8.25 in rear