Steel wheels and disc brakes

[jocko]

What Scott said - the only thing that works for FACTORY-SIZE disk conversions is the 71 and up K10 wheel, nothing else from Mr. GM will clear them. The problem with 70 and earlier C10 OR K10 wheels (both 6 lug) is that the inner profile of the rim hits the caliper. As long as you know they are K10 wheels, you're good on a stock size caliper. If you buy "big brakes" you'll need custom wheels.