move the evx and rx around you take over a foot of wire out of the truck. but this may volid the warranty and you need cut some stuff to make it fit.and 2 7 cell packs traxxas said the evx can handel 14 cells which they say puts the truck over 30 mph the how to is on www.traxxas.com i raced a hpi savage with some huyper 8 port in it till my titans melted down and that was with only 12 cells