Seems like non standard configurations are only available on a few models in the US
"Since customizing is the core concept of BMW Individual, you choose from a package or a-la-carte. Packages are available on the 5 Series Sedan, 6 Series, 7 Series and the X6. For the M5, M6 and X6 M, simply select exactly what you want. "
Perhaps you can convince them if you hand over enough money ?