Replaces rear center diff bulk for mounting a single electric motor at the right rear position of the truck (behind the steering servo). Front spacer lifts front bulk to allow spur gear clearance.

Uses stock screws and upper center bulk brace. Longer screws included for front bulk to compensate for the bulk spacer.

Requires modification of the stock radio tray. Now allows use of mechanical brakes if desired - must use front brake cam/actuator to actuate above spur gear. Servo for mechanical rear brake must be planned and gearing will have limitations when using mechanical brakes.