http://www2.towerhobbies.com/cgi-bin...?&I=LXJLH6&P=Z
I'm guessing it's that one.
BTW, I'm just preparing my R40 for my track. The MT12 will definately be going. Too slow for that huge track and runing in my parking lots here. Especially when you want to play tag on the track and try to run away down the straights. LOL!