If you want get to a 100mph quickly... you can try a 7700kv motor on 4S... the vid below demonstrates this with a TC4... I drive a touring car on 2s with a 7900kv motor and it is quick...
you will need to watch the temps though...
[YOUTUBE]G7CYGViimAQ&feature[/YOUTUBE]
http://www.youtube.com/watch?v=G7CYG..._order&list=UL
Alien