I have a customer who brought in a stock 1958 GMC 100 pickup. He, like the rest of us enjoy the modern safety of disc brakes and a power booster. We ordered a front disc brake kit from cpp with a hub upgrade for the tapered bearings. when it showed up the bearings were rollers and did not fit my new hubs. then i had to drill out the hubs so the cpp discs would bolt on with the supplied allen bolts. when the tech department helped me with the right part number i ordered from my local napa the right parts. Javier at the tech department at cpp saved the day! although through all this frustration i wold like the guys at cpp to PLEASE stamp the calliper brackets L or R so the install can be easy! thanks!