Wheel cylinder bore size question

Does your Ramcharger have 11 x 2 1/2" brakes ? Most did and that would take a 15/16" bore cylinder Raybestos # WC37235 (same left and right) : You want the correct bore because that will change the braking characteristics a lot . The vehicle was designed to work with a certain area of friction material , a certain wheel cylinder size , certain hardware - it's like having a cam in the engine working with the correct intake,carb, etc,,,,