I would like to add some type of xenon or xenon look bulb to my 07 V50. I have every option except that and navigation and I now regret not having them; my 2004 X5 and 2003 Porsche C4S have them and I never thought there was that large of a difference but after a few days of night driving I need a change. What type of bulb are they, H9, H11? Is it possible to totally replace the headlight system and add ballasts and ignitors? Are there any bubls that put out the same amount of light as xenons while providing light closer in the spectrum to daylight?