I have been wheeling my Losi truggy lately but I decided to update my old Kyosho ST-RR and get it back in racing condition. I added a brand new MMM with a custom mounting plate that uses the existing holes in the chassis and a Traxxas bracket. I added an EliteRC cnc sliding motor mount and Tekno Neu 1515 motor. I was using a Losi battery tray but I cracked it so I went back to my original custom carbon fiber tray that is lighter and lower. Added some RVM progressive springs, RR wide spur gear and HB hard diff gears.