64 valiant disc brake conversion

I just scored a front disc setup off an old A, kelsey 4 piston calipers, knuckles, SBP rotors, lowers, strut rods, and its manual brake cylinder. Everything from the LCA bushing on out. Didnt get the upper A arms though. Do I need them or can I use my 10 drum ones? I hope I can so I can get them in this weekend. Nice thing is I didnt have to pull them from a rusting wreck, and they were working up until 2 weeks ago when he went to a LBP setup. Even the rotors are nice. He also threw in a good gas tank and a DC chrome unsilenced air cleaner, Im golden!