charlesskelter
+1y
This is only the case if it is half assed. You can't just remove the booster and run a power brake master cylinder. The stroke as well as the pedal push rod length will be way off, causing the difficult stopping.
If you do it correctly, by purchasing a manual brake master cylinder, and making sure (or modifying if need be) the pedal push rod is the correct length, you'll have no problems stopping your vehicle.