Since I'm in the market for a 2004 SLK320 I was wondering if bi-xenon headlights were an option on these vehicles. Having driven vehicles equipped with the bi-xenon lights I can say that I prefer them over halogen lights. I would assume they were an option, but does anyone know for sure? I just don't want to be holding out for one with the bi-xenon lights if they weren't even available. Thanks!