I got these for the Durango, they don't make a longer shackle for it so I'm going to use lowering shackles for a chevy 1500. Yes I said lowering shackle, for those that don't get it chevy shackles are reversed from what we normally see. The mount is below the spring so the shackle sits beside the frame, and by using it on the Durango they will increase lift instead of lowering it. They don't fit perfectly so you must throw in a couple shims between the bushing and the shackle. Should give me a couple inches of lift, I already lifted the front 2 inches so this should be perfect. Once I get them on I should be able to sport 33's under it.