That pedal really helped me with my rev matching on downshifts. I have switched to one by the same company that doesn't have the two extensions, instead it has a smaller (5-10mm) extension that sticks out to the left for the whole length of the pedal.
It is like the one in the picture here, except that the whole pedal is satin finished without the little diamond grips. This vendor recommends a smoother finish for the throttle and it has been working well for me.
The vendor (Brian I think) is cool, when I uninstalled that pedal I sent it to him to be media blasted back to like new, and he also sandblasted some metal wheel center cap emblems for me.
SRP Porsche 986 Boxster Aluminum Racing Pedal
