I went to the dealer the other day and asked if I could get the aluminum running boards for my 4.8, they said BMW does not make running boards compatible with the 4.8 and that they had just tried to install them on another 4.8 unsuccessfully. Therefore, where do I get the aluminum ones that are in the pictures in the sales pamphlet on the 4.8?

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2006 BMW X5 4.8is Lemans Blue/Beige/Dark Maple
-Nav, Comfort Seats, Heated Steering Wheel,
Rear Airbags, AUX Input
2009 BMW M3 Space Grey/Black/Carbon
-all options