Raybestos Wheel Cylinder Kit # WK104 has the 1 1/2" cups and spring if you can rebuild your old wheel cylinders. It also comes with the dust caps for the later 51 and newer wheel cylinders.
Your gasket for the differential is gonna be Fel-Pro #RDS 5049, at least that should be for the front of it, which I also used for the rear.
If you need to replace the pinion seal its, National 41130N (2.598" x 3.481" x 0.50")
Good luck, Jeff
