Inside a rear wheel arch. Small patch panel fitted. The clamp under the patch holds the rubber piece that prevents the wheel from coming up too high. The four round holes left and right (right e.g. under the digit '7' of the date) hold the cage construction with the wheels, rear brakes and diff. The left two of these holes are currently "occupied" by the frame construct that the workshop fitted under the car to be able to move the body around.