I am also running 8000k for over a year now... they tend to wear down and mine are same as my dads 6000k ones now
May have been posted before but here's AutoExpress take on the legality.
http://www.youtube.com/watch?v=yVuSSdZNsZw&feature=player_embedded
Also believe you need to have Projector Lenses, Self Levelling Lights and Headlamp Washers for it to be legal as fitted to Exec.