ive been to a japanese website and i seen this black 4.4 motor same diamter and lenght as regular and it was placed in a 35mhz booster and i translated it of that google or alta vista thing(forgot) and it said it needed 2 cell mod to work or the torque would start the car so slow it would take 3 meters just to get it to its top speed i dont think its real, someone probably painted the motor or something, but anyway i lost website cuz my little brother using my computer