I would like to purchase a true xenon light kit (both low and high beam)for the Crossfire. All over the internet, I see them selling anywhere between $80 and $600. I tell my friends that I would have to spend $600 on it, but one of my friends says that all you have to do is change the halogen bulb with a xenon one, which will probably cost $80. What do I buy? People say that I have to change the ballasts and other stuff...what is that, and what do I need for a true xenon light kit?