Actually Dave, the rotors were standard A Body pieces drilled for the 4 1/2" bolt pattern, with 1/2" RH studs instead of th 4"
7/16"LH & RH pattern. Don't forget the radio and heater delete plates, the outside mirror delete, and the pass side fresh air duct.
Yes, they take the same bearings,(NO.2 & NO.6). There is no adapter on K/H "A" body
brakes, they bolt directly to the tabs on the spindles. B.T.W., "A" body rotors are 11" dia.
The rotor hub appears to be a standard" B" body piece, and the center hole in the rotor itself is bored out to the "B" body size and then drilled for the 4-1/2" bolt pattern