I just put a 750 motor in my losi box. Unhooked the other 2 and took the one on the right out. Removed the shield piece off the one on the left to gain a little more room. Drilled out the top slider slot for the bigger screw to go into the motor since they are bigger screws that bolt them in. Drilled another hole through the motor plate and through the back of the motor, It will not be adjustable and with it all the way against that side of the box the belt is tight enough to stay on good. Wired it up for just the 1 big motor and left the other one there just to use the gear. Wired it all back up and Poof it started my truggy. I don't know how long this will last and I dont care if it lasts that long. I just need it to work until my new box gets here.