Please do post more info - this is very, very interesting indeed. :smile:
chrismc, be very careful, be sure to inspect the functionality as well as components of the factory HID (including leveling functions), on a vehicle so optioned, and to verify that, absolutely, this will be an OEM-to-OEM "transplant," with *everything* included. I'd go so far as to insist that the dealership give you that guaranty, in-writing, and to also bring along a friend with you who is well-knowledged in this area, if you're not well-versed, yourself, to truly verify the final product.
The cost of aftermarket plug-and-play components have come down to the $50-level, RETAIL - shops/individuals offering "HID retrofits" which are nothing more than these plug-and-play bulb/ballast/ignitor/wiring-harness kits (and thus neither true full-unit factory transplants nor true complete-optics retrofits) can make a lot of money by charging only a few hundred dollars for (easy) labor.
Be careful!