I have a 1970 C-20 3/4 ton , 2 wheel drive camper special, lowered, with 295/50/15 tires (shelby Cal 500 aluminum rims front/rear). My Question is: Name Brand/Part Number# of a Disc Brake Conversion kit that will fit my vehicle. My Problem is that most online parts Companies are not too sure to the correct Part #, since this is a C-20/15X10 aluminum rims. Any and all information would be greatly appreciated.