Does anyone know what I need to change my 2007 hid stock headlights to different ones? I'm looking to get blue ones but I dont know how many bulbs need to get changed and if I need anything else to get that slightly brighter look etc.. I'm completely clueless when it comes to this topic.

Need to let the GF know since she's out x-mas shopping at the moment and I'm at work so can't really do too much searching on here.

 

Blue bulbs = less light output ... If you're just talking about the normal headlight.. then you'll just be needing to change the pair. Maybe somewhere between 4-6k would be nice. I wouldn't get anything more than 6k unless you just want it for looks and somewhat annoy other people.