Hy comeaud, I think you are referring to the backing plate, if you are talking about the plate to which the wheel cylinders and brake shoes are mounted.In order to help you find the correct parts I will need to know the width of your brake shoes minimum, the diameter of your wheel cylinder bores will also be helpful. There are many possible options listed for your truck, from 15" X 4" brakes to 15" X 7" brakes. This is all assuming that no one has swapped the rear axle sometime in the last forty something years
Last edited by 3B; 01/19/2015 4:38 AM.