It uses an XL Motor for drive (geared down 1:2) and a M Motor for steering. It is fully remote control thanks to the IR Receiver and the IR Controller. The body is still easily removable (however you need to disconnect and remove the battery box first...) and the overall appearance is pretty much the same. I got rid of the differential (as they worsen the off-road performance), the V6 engine (which I wanted to keep, however it was the only sensible place for the drive motor) and a couple of other axles and gears here and there to make everything fit. I also reinforced the rear suspension with hard springs.
EDIT: I decided to add my big bad black wheels to it...
Suspension travel is worse, however it looks a lot lot better and it still steers fine.
