We run ours for comedy purposes. We put 13.5's in, built as per instruction sheet, set rear camber to about 3 and front to zero.
Brushless -
13.5, 26 Tooth Pinion.
Here's a vid of ours from a couple of weeks back, another will be up later (when I get the vid file) from yesterdays shannanigans. 2 x SC10's versus 2 X60's in a 3 lap bumper truck mess!!!
http://www.youtube.com/watch?v=1Vz8rTByJbk - As you can see, plenty quick enough.