dave you know the blue starter B rudi has? it's designed for the superten along with the spider series rc cars. if you look at the starterbox wheel it is alot smaller than the gs and serpent boxes. this will allow the starter B wheel to hit the flywheel throught the chassis hole on the superten...which is pritty small right?
good luck finding one though. you'l have to get it brought in from some asian web site. i think a few dudes from the migara site know a few reliable web sites (lance (chippy))