[Overdriven]

If you can't or don't want to move your battery forward and mount the esc behind it, make a new center diff top plate or extension that will mount the esc more towards the rear of the truck. I also second moving the reciever further forward and twisting the motor wires up to look like a candy cane.

I'd also try to keep the esc reciever wire away from the battery wires as much as possible. In the pics it looks to be too close and runs parrallel to the pos wire a little too much for my liking, I'd zip tie it to the chassis to get it away and prevent damage. This won't have as much of an effect as the motor wires but every little bit helps.