WOW! That looks great! The exterior pieces look really good together ... I'd have to see it in person but from the pic I think you have to buy the whole Aerodynamic Kit for a complete finished look ... just the trunk spoiler or just the side sills by themselves might look silly. And like others mentioned, I am sure these parts are going to cost serious $$$$$. But I am glad BMW is offering thing like this for the X6 ... pretty cool!