There are many kit available online, to convert your 6-lug, 1/2 ton Chevy truck from drum brakes, to front disk brakes. We have used the kit provided by Classic Performance Products.
www.classicperform.comWe purchase the complete kit, including upper & lower ball joints, spindles, calipers, pads, soft lines, inner & outer wheel bearings, inner & outer tie rods, adjusting sleeves, power brake booster, dual chamber master cylinder, proportioning valve, mounting hardware & installation instructions.
Considering the time & effort, to locate, procure, pull, refurbish, install & troubleshoot, we go with new equipment. When it comes to Start, Steer & Stop, we prefer new over used.