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I am running 3" leafs in the back with shackles and hangers. Made sense to me because my leaf springs were wore out anyway. I didn't see the sense in putting new stock leafs, then flipping it. I think that you lose any ability to haul anything heavy, but not an issue for my truck. Overall, I have been very happy with mine, and it was an easy swap. Bought all of mine at performance suspension components. Best of luck.