I highly reccomend this Item to anyone who has the base model open diff, and wants to install a lsd. Only things you need is 10 bolts for the pinion to ring, 2 diff bearings, 2 seals, 3 quarts of 75 90 RLO., and take it to a gear diff pro shop and let the magic begin. After 1000 miles drain and fill, so many good options for new diff oil. : ).