yes you can, a 74 to 78 set up should work. They are cheap and plentiful. Check out the Chrysler 300 web site, they have an extensive write up on early cars disc brake conversions. You can also call Murray Park @ 1-419-448-0293 and get specific information and parts for this disc brake conversion project. Good Luck, it will work I did a 66 C-Body Sport Fury Convertible to 4 wheel discs, all Chrysler parts.