I would hold out until you found an E39 wagon with Xenon lights installed. From the factory, the cost for Xenon HID lights with auto self-leveling is something like $700 or $800, pretty much a bargain. If you were to install a set yourself, be prepared to spend in the $1200-1500 range if you want BMW OE; $400+ for aftermarket, if you can find it, WITHOUT the self-leveling feature.Originally Posted by eggdog23