I agree, HID are very cool compare to any other standard or halogen lighting, and it would enhance the custom eye candy appeal. I began to think what would be my approach in designing and installing, a proper and functional HID for my 2005 PX 150. The change will completely change the look of my classic two stroke vespa. You may have influence me into buying another Vespa, just to get into the stupid fun in full customizing. HID would be over kill considering the acceleration and speed of a scooter; but when I first installed one of those most current, high end, performance halogen bulbs, I was in disbelief when I saw how much my stock 2005 PX 150 illuminate a street section of my neighborhood that is completely dark at night. It light up the neighborhood street and I began to laugh at myself and thought,” This is very cool! And this is coming from a scooter?” That is when I decided to replace all the bulbs in all my vehicles. I can imagine how much lighting I would get from a blinding, high output HID setup; Lol, my nieghbors will say WTF!!!???. In a classic two stroke Vespa, it seems that halogens bulbs have a shorter life span; I believe the cause may be the unforgiving nature of halogen bulbs that is sensitive to voltage drops and over voltage fluctuations. If not, I stand to be corrected. Caspa2006, Good luck with your project.