There's a reason for that. You are really NOT supposed to use HID bulbs in a housing made for halogens. The two bulb types have totally different light patterns so the housings are made for the specific type of bulb. That's why the HID kits say "for offroad use only". They are not too bright in my XJ, but in the JK, they would blind you for sure. That's why I had them in my headlights and fogs.....lol.I have HIDs on my 99 XJ. Not as sharp a cutoff as I'd like. Also, both my headlights are exactly the same, both of them have the point to the right (adjusting the headlights do nothing to help this). It seems like there should be a different headlight for the driver side as the passenger side, they should be mirror images of each other.