I will say having installed both the Mopar kit and the Dr. Diff kit the biggest difference being no hole/dent needed on the frame to clear the bolt on the front spring hanger on the Mopar kit. The Dr. kit uses a counter sunk bolt allowing clearance for the frame and spring hanger without modifying the frame for clearance. I can get pictures later today. You still need to relocate the spring mounts on the axle. Rear shackles are basically the same, being careful not trying to snap the bolts bringing them up to torque. I somehow broke a bolt on both kits just trying to tighten them properly. Apparently not.