Master Clyinder Firewall Reinforcement ??

First post, and hello. Of course I already have a question about my 72 project Dart Swinger. I have switched my original front power drum set up to 73 disc brake set-up and would like get rid of the power booster. My question is there supposed to a factory reinforcement behind the master clyinder ? I have been told no, but read a thread on here once that there is.