The latest 4/4s have the Mazda MX5 gearbox (photographed at the factory last weekend)
As you can see, its is a bit more integrated than the previous 4/4 gearbox which is the Ford MT75, particularly around the gear change extension mechanism. The speedo pickup must also be integrated into the Mazda gearbox as well rather than the external sensor ring etc you can see on the output flange of the earlier gearbox.
