73-87 c30 dually disc brakes?

im looking to upgrade the brakes on my 1977 chevy c30 regular cab dually. Does anyone make a rear disc conversion with like some drilled and slotted rotors or something? ive looked all over and cant find anything.

what rear end, bolt pattern, and what size rotors are you looking for?

I know this is an old thread, but it's still showing up on google. Did you find a kit yet? In 1977 your C30 would have a Dana 70 rear axle with 8x6.5 lug pattern. Lugnut4x4 sells a kit for that. Here is a link --> https://www.lugnut4x4.com/dually