Originally Posted by bukil

As far as I can see, the changes are:

Narrow chassis
Low mount shock towers
3mm top deck
New knuckles and rear hub
Belt tensioner @ bottom?
Rear cvd / driveshaft?
Easy shocks mount - instead of the looong screw.

Pretty much the option parts + new rear cvd / driveshaft and belt tensioner @ bottom - its connected to the servo aluminum mount.

Hiro will chime in and confirm.