Hey guys

I am considering an E4RS as a replacement for a TC5.
I will be racing mostly stock 13.5bl rubber on carpet.

I am wondering if the 3 belt system will be free enough for stock or if it will suck up too much power.
Also I read that not all motors fit because of the length of the can.. whats the longest can that fits.

Ant other good and bad points of note?

Thanks
Pip