look up the imex B6 charger on ebay.

the ESC "can" handle a 6s lipo. but IMO, its a bad idea. parts will be more likely to fail, and the ESC or motor my go up in smoke!

everything on that truck is designed around the power plant. everything is built to handle the speed and power of 4s. 6s is really insane.

even the hpi savage flux is prone to problems when running 6s!

BTW, can you post a link to that 6s lipo? i couldnt find it.