Thrust Block with 489 Sure Grip

Also look and see which style green bearings you have there are two different ones RP 400 ( crimped onto the bearings ) and MO 400. ( snap ring style ) I am almost positive since I went out and checked my 8 3/4 that you are good to go with the MO 400 style bearings. ( they move the axles out slightly where the RP 400 moved the axles in slightly. )