Whether Huck or Bendix, all the brake parts are larger and heavier duty on a 3/4 ton. Unless of coarse somebody put 3/4 axles unto the 1/2 ton, as that is not unheard of. The 3/4 ton's need to stop a bigger ( heavier ) load . My huck cyl's were always different fron the Bendix as I have owned both and 1/2 and 3/4. Jon
