yea i want one so bad, but no one will let me buy on etill after christmas, i wonder why? has any one tried the crest spin brush motor ( crest toothbrush) its the same as the stage 2 but with a LOT more turque. they say you really cant run it with rwd ypu need awd cuz it has soooo much turque. check out the thread i made a few day i made a few days age and theres a link there to a nother fourm thats all about xmods. and has 5th and 6th cell conversions and aslo how to install the spinbrush motor.