You could look for what they call "rebased 9007 HID bulbs" on ebay. What they do is take a 9007 halogen bulb, and a HID bulb and take the base (screw in notches) of the 9007 and the rest of the HID and put it together so it can screw in just like a halogen 9007. You probably want the D2R bulbs also, as they are designed for reflector type headlight housings (ala non projector housings). I would suggest doing a projector retrofit (D2S bulbs needed here) but it is costly. But none the less that info should help you.