DS59- the flip kit is a little more complicated than the dearching method. In the flip kit, you have to unweld the rear end housing mounts and relocate the mount to the opposite side of the housing. it usually comes with new mounts for the rear end. What happens is the leaf springs are relocated to underneath the housing versus above it( the rear end housing now sit on the springs versus underneath). The flip kit will give you about 5-6" of drop without touching the leaf springs. With the flip kit you'll also have to c-notch the frame rails because the housing will hit it with serious bumps. Hope this helps.