I just sold my rustler vxl. It was stock with a smc 3800 6 cell pack and it was just as fast as my tmaxx 3.3 that I have. If you put a lipo in the rustler no tmaxx will have a chance. Just go to youtube and type in rustler vxl and you will see tons of videos of 70mph and up passes with a stock vxl rustler and a 11.1v lipo pack.