Chevy duty at www.chevyduty.com has a disc brake conversion kit available part # 71-976D6 cost $699.95...not the cheapest thing out there but a nice kit w/new spindles hose calipers bearings ect...also booster kit available part # 71-909 $349.95...not a lot of money but enough to make you cringe...pevinetrans...p.s. thi is for 60-62 trucks