1990 Other Jeep Models engine stalling

I have a 90 jeep grand wagoneer with a amc 360, It has a miss at idle and low rpms. I have installed accel cap rotor wires and motorcraft plugs.
set the timing and adjusted the motorcraft 2150 carb. Miss is still there. So I removed the factory ford igniton module and wired in a GM 4 prong hei control module. This solved the miss but now when I apply the brakes the jeep dies, it will start back and run until you touch the brakes. It will not do it in park only in gear. Please help before I burn this classic to the ground!