This is why I sometimes hate electric, especially spec racing... We are getting to the point that we have to run the same brand motor, speedos, and batteries... IMO Spec has always been about getting the most out of the car within the rules....
I agree with SMC on this subject.... They have guidelines from sanctioning bodies they follow as far as dimensions and safety and that should be it....
I can imagine it now SMC doing R&D to increase IR untill it's close enough to brand xxxxx.....lol