wow that is entirely over engineered. You could splice the wires together for the clutch start switch and use the threaded hole for the clutch start switch. Put a bolt in it and adjust it to where you want the pedal to stop. Otherwise, weld a long nut to the clutch pedal arm and use a bolt through it to adjust where you want it to stop against the floor board, weld a larger washer to the head of the bolt to give more surface area against the floor board, cut off excess...done.