They sell HID conversion kits for high/low beam headlights now. Also, the ballasts are digital (on most of them) which eliminates the 'flickering' of the lights when you first turn the HID lights on. If you have a high powered audio system, the flickering of the HID headlights with the analog ballasts is a BIG problem. I have 4 amplifiers in my vehicle drawing almost 200 amps. I upgraded to the new digital ballasts with the high/low beam HID bulbs. The bulbs (there are two versions) either move in/out or tilt up/down based on the headlight housing you have. I believe they're selling them on EBay by now. I'd do a search on "HID digital ballast bi-xenon". That should bring up the correct type of HID system you're looking for. I've installed the new digitals in both my Ford SuperDuty and my '88 Reatta. They work perfect in both vehicles. I don't like the 'purple' color and thus ordered the bulbs in the 4300k (same as Mercedes, BWM, Acura, etc). Just an FYI if anyone is interested.