The part that the pedal attaches to inside the car. Did you check yet to see if your carb is opening up all the way? If it is bending the pedal won't help any. In my case the actual pedal was hitting the floor before the carb was all the way open, and before the linkage engaged the kick down switch. If you look under the dash the pedal attaches to a piece of round rod, and you can see how this could get bent over time.