I replaced my drum brakes with a set of rotors and discs from a 76 Maverick. The master cylinder and booster were included with the rotors. My questions are; do I need to use the booster? I'm asking because it looks like it will not fit without modifying the export brace (something I am not willing to do), can the master cylinder from the Maverick be used? It is a dual bowl, and finally, if the booster is necessary, what other options are available?
As always, any and all help is appreciated.

Troy