I upgraded the foglights on my SRT-4 to PIAA housings. I kinda regret I did, because even tho the light output is outstanding, I have to replace the bulbs pretty frequently. So I was searching around for a long-lasting H3 bulb and came upon this site, offering not only H3's but 9000-series LED replacement lamps as well
The only recommend them for fog or daytime running light duty.
Think there is any reason the 9000 series bulbs can't be used for headlights? Perhaps the light output would not be as bright as a 55watt conventional bulb?
http://www.ledlight.com/fog-running-light-leds.aspx