I just recently dropped a Novak GTB with Velociti 6.5 Motor in my T4, absolutely flies. More efficient, more punch, and better runtimes than brushed.
Considering getting a 5.5 motor as well, might be a tad too much for a truck, the tracks here tend to be on the slippery side.
Maybe a 4.5 when i get my yokomo MR4 BX
