MOT=Ministry Of Transport (test), a yearly check to ensure a vehicle is roadworthy.
For those considering this modification, my advice is that it's not worth it if you're going to be using the stock housing (or, indeed, anything designed for incandescent bulbs).
Yes, the light is brighter but it's not focused, so to avoid blinding other drivers, it has to be aimed lower than usual, reducing its usefulness.
My recommendation, at this point, would be to get a decent set of halogen and/or HID auxilliary lights from a mainstream player (PIAA, etc) or, if you want to go the HID-headlight route, buy a kit with the correct reflector.
