Rear suspension mod for Evo 4

This is a modification of the Evo 4 motor pod to address some shortcomings. 

• When using a commercial axle then the width of the car is now possible to get within 190mm without modifying the axle.
• When using different brands of tires (like Volante) there is bigger possibility to adjust width.
• When using a gear differential, like the one from Schumacher, it no longer touches the frame.
• The ride height adjusters have tighter tolerances.
• More space for sensor cable and/or power cables at the rear of the motor.

To allow for the changes the motor is now moved 2mm to the left.