66 Fury III Manual to Power Drum

I just got a 1966 Fury III with factory manual drums. I am redoing the entire brake system(lines, shoes, hardware) and keeping drum all around. I have a Bendix Booster and am going to put a tandem master cylinder in. My question is, besides firewall reinforcement is there anything else that would need to be changed to convert from manual to power brakes. TIA