So I picked up a FT b4.1 the other day I am racing it on sunday in a 2wd open buggy class what I have right now for a motor is an orion 19t its nice but I have no known status of the brush quality or if I would have to cut the comm. could I run that easily or should I go pick up a 17.5 BL system for it? My driving skills should compensate for me not having a wicked hot motor in the buggy.