Why go 3s? its pointless in a T4, I've been racing and bashing my T4's for a lil over a year now, i think if you want speed go with the novak gtb with a tekin 2.5 motor, or a 3.5 novak motor, more speed then ever needed. and eventually the tranny will need to be replaced. then if you want a good offroad setup get the novak gtb with a tekin or novak 8.5 motor on a 2s lipo, has plenty of power, the wheelies will get old, even showing off to freinds