c10 to c20.....6lug to 8lug anyone tell me whats different and what interchanges??

[n8r67]

Thinking of going from 6lug drum to 8lug disks. Anyone tell me what all is different and what interchanges? Want to convert to disks on my 67 c10 for my big block swap. Im figuring instead of buying a big brake kit and all that stuff. With a bigger selection of 8lug wheels available I can just step up to bigger c20 brakes. I will be swapping a bigger reared anyways so not a problem back there. Did a couple searches but couldnt get a solid answer??