I have an Infinity I30 and need new headlight housings. I found several on Ebay and want to know how I can use them with an HID system. Some of the housings say they cannot be used with HID's, like this one http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&sspagename=STRK%3AMEBTOX%3AIT&viewitem=&item=180198745983&_trksid=p3984.cTODAY.m238.lVI.
If I want to upgrade from halogens to HID's, do I need special housings? The so-called "projector" housings or do I need a new one from the dealer?

it's look like this projector headlamp comes with everything. it even has a the bulbs so I will say. just but it and install it directly to your car and connect the wiring and see if they work if not then you will need to modified and you will have to take to any experience body shop and they can do it for you but this look better than the oem one and it doesn't cost that much. so if you decided to buy it. all you have to do is connect the wiring and that is it. good luck.