I have put plug and play HID's in both my lowbeams and fogs. No retrofit. In south west Florida, all the trucks have these so I never worry about cops. I have heard that it is considered an illegal modification though. Click my build page for pics. I personally think projectors blind you just as much when they hit the slightest bumps.I have a question for those that have done HID mods to their low beams/fog lights. Are you doing a complete retrofit or just putting in HID bulbs and ballisters?