I have this and it drifts like a dream....no need for any hop ups! -TA05IFS-R:
http://www3.towerhobbies.com/cgi-bin...&I=LXURP6&P=SM
...or if that is a little on the expensive side then get this....also no need for hop ups and might be a little better if running on rough surface! -TB02 Drift spec chassis:
http://www3.towerhobbies.com/cgi-bin...&I=LXSWB5&P=SM