I liked itsbrian's remix of the TX-22 gas pedal but mine had a tendency to slide forward as it only friction fits the outside of the rail and doesn't fit into the M1913 slots. I added some mass to the front and included a key into the M1913 at a location that was comfortable to me. I left the sides around the key flat so you could remix the length easily if you needed to. I also prefer heat inserts and metric bolts so I modified the hardware as follows:

-M3 socket cap bolts on right side (M3x35mm)
-M3 heat inserts on gas pedal side (4.5mm outer diameter, 5mm height)