If you want to upgrate it to factory Xenon lights it will cost you arms and legs.
Here is the kit that you will be very happy with and member Startx5 will tell you how he love it.

You need one set of H7 HID converson kit and this kit come with everything you need and it plug and play.

HIDNY.COM 646-662-5221 HID light & Auto Accessories wholesaler importer : HID-102S > HID Single Beam Digital Ballast Kit