It sucks trying to find parts on your lonesome especially when you dont know what specific parts your looking for. I am currently rebuilding a 12 bolt rearend and needed some new parts. Raybestos has a kit for 12 bolts that covers all the little springs, pins, cups, and sleeves. Part# H 7046T. I got it from Pep girls for $6.49+tax. Hope this helps anyone out.