I reacently bought a 2003 WRX that doesn't have the standard headlights and the low beam blub isn't working so I need to get a replacement. here's a pic of the headlights, looking to know the bulb number for the low beam and suggestions on where I could buy one from. thanks

 

looks like it might be an H7 bulb. why don't you pull the light bulb out and take a look? it should say what kind it is on the bulb itself.