that is way too expensive. cause i am about to put a 15" lift on my 95 Z71 and the gears come with it. the shop told me that they can install the kit and the gears for under 5,000. if i was you, i would just install the gears myself. it really isn't all that hard, just a little bit of time. the chiltons manual even tells you step by step how to do it, i believe.