the way you have worded this I do not understand. It may be that your factory master/ booster will work. depends on the bore. If it is too small you won't have much pedal. You WILL need a prop valve. Many guys buy an aftermarket adjustable one which of course allows a certain amount of tailoring.
If your master you have now was your drum master, you will have to remove or rupture the residual pressure valve in the line feeding the disks which is normally the rearmost fitting on the master. The prop valve goes in the rear line. You did not mention the year, make, and model, but---If you have or are keeping the warning light switch, you need to plumb the new prop valve to the rear of that in other words master--differential switch--prop valve--to rear brakes
as an example for master, I was using the factory drum master on my 67 Dart to feed 4x disk brakes. It is manual, but worked fine. I ruptured both front and rear residual valves, just stuck a nail through them