You should try a big Outrunner directly connected to the rear diff, find like a Big Axi like this
http://www3.towerhobbies.com/cgi-bin...?&I=LXPPY6&P=0
or for more power and less money go with this monster
http://www.hobbycity.com/hobbycity/s...idProduct=5139
Benjamin White
R/c Monster Team Driver
Jq the car, LST, Sportweks turmoil pro
Unconventional Techniques, Superior Results