|Our 6-lug disc brake kit contains all youll need to
put modern discs on your stock 1/2 ton spindles, and keep your original
pattern. The 1-1/4" thick, 12" rotor uses a GM full-floating caliper.
The 8" single diaphragm booster master cylinder and proportioning valve
mounts in the stock location. The kit uses tapered roller bearings and new
forged hub with the hub upgrade kit. Standard kit uses original hubs. Some
stock wheels may rub the caliper, it may be necessary to use a spacer. May
not work with some stock wheels. Also, 1947-50 trucks may need to drill
out lower spindle hole from 7/16" to 1/2". Note: Frame mount brake
boosters may require #CP9424 transmission mount.