Big Wheels And Big Brakes?

[rick bell]

anyone know where to find big tires (18x5.5), rims, drums(almost doubble the size of the orginal drums), and larger calibers. these calibers also retract the pucks via a spring assemble inside the caliber so the linings never touch the drum if there is no brake pressure being applied, allow for a much more rapid excelleration at the start. also the drum and linnings are metalic, not organic.
saw this set once on a skymaster but forgot where.