Need help changing to Disc Brakes on my 1968 GTO

I have a 1968 GTO and I want to change my front drum brakes to disc. I was wondering if any of you reading this know if a 1977 Cutlass Supreme or a 1976 Oldsmobile 98 would be compatible with my 68 GTO. If you know please reply. It will save me a lot of time. If you know other cars that would be compatible with a 1968 GTO disc brakes please help. Thanks!!

use any disc brake set-up from 1968-1972 chevelle,cutlass,tempest(gto,lemans) skylark.1973 and newer are not a bolt on