What else would I need?

72 Duster...bought the front disc brake kit separate from the master cylinder and proportioning valve...either way, I got some guidance from Doctor Diff, purchased the master cylinder and a new proportioning valve to accommodate the front discs...works flawlessly. Sidenote, did not go with power brake booster, but there is still a substantial improvement in braking, and I can let go of the steering wheel while stabbing the brakes and there is no wandering right or left like you have with front drums.

I recommend Doctor Diff...in Polson Montana