1975 scamp brake conv

seems everyone talks scamp to 1974 then.....
I have a fresh 318 with mild cam I want to put in but when I pull the 6 I want to clean up front suspension and convert to disc brakes.
Our dollar sucks so bad right now I look at a Wilwood kit and sob. Are my ball joints the larger type already? How do I tell? Any suggestions for full brake kit with spindles etc?

:banghead: then :banghead: some more.