Fronts are Raybestos 11" disc pads and the rear Raybestos shoes. We put some pressure on the shoes and noticed the rear shoe not moving and the forward shoe was moving. The problem is with the right rear brake on a 1970 Charger. Front disc rear drum. 15/16 master cylinder with 7/8" wheel cylinders. It had the wrong proportioning valve for the last 31 years and that's why I changed it.