Power to manual brakes

I think it just changes where the brake pedal winds up sitting. Kind of a preference, unless you drive an automatic w/ right foot for accel & brake (how I was taught) and worry about snagging your foot. If a stick-shift, might matter if you do the right-foot "brake w heel while giving gas and lifting clutch" trick on hills. Those w/ a short left leg might want the longer rod in an early car. Regardless, unbolt your brake lamp switch until installed, then adjust that to sense (but not stop) the pedal motion.