I am currently taking off the lift that came with my jeep. Its leaf springs for a yj. Not sure what size the lift was though. although if you had a yj you could always throw on that lift and then ad a tad bit of a body lift to help you out. All i know from the old lift I have is that it has 4 leafs on the front and 5 on the back and it looks mighty similar to the 4inch im installing. Parts match pretty identical. skyjacker shocks.