[Dafni]

The area that has to be grinded away is pretty obvious once you hold the E tranny into the chassis. You just have to make a bit a bigger hole for it. It really is just a few mm's.

I decided against the Revo tranny for two reasons: First, I didn't like the idea of an auto shifting on an electric motor, and second, the E tranny offers you a nice motor plate, which in turn gives you a handy place to mount the esc as well.
Plus, I have the impression that with UE idlers this EMaxx tranny is BL proof.
(and the shift-with-your-thumb thing is just awesome)
The next version may be single speed, though.