These are among my first mods I intend to do. I already have a nice synthesized FM radio going in it, as well as a high torque and speed steering servo. I'm gonna use an electronic failsafe, because I'm well aware of what can happen. I have a bent and twisted stock R40 chassis for show and tell...
Thanks for all the suggestions, fortunatly, I have enough experience to know what to look out for. I was just hoping for some other owners to chime in with their own reports.