I have HID's in my super's H4 headlight.
Since the HID is now in a reflective housing(meant for halogen bulbs), tossing bright light everywhere blinding all in front, you need to use these sheilds:
http://www.casperselectronics.com/st...931bf2a9a4ed2a
So......... now you can have a HID setup in a conventional H4 beam.
Pete