gokool - most of the xenon hid lights (The ones you see that are between the prices of $10-$40) you see on ebay is not a true HID lighting system. They are replacment bulbs with a blue tint to give it that hid appearence but not even close to true hid performance. If you want it for looks then go for it, but don't expect it to perform like hid or even close to stock for the matter. For a true HID lighting system, they go from anywhere between $500-$1000. Most HID lighting systems are retrofitted and do not work well in halogen bulb housing, your beam pattern will be all f*cked up and you'll blind everyone. If you were to put a true hid kit in a g20, look for one that can be retrofitted to a H4 bulb, and you will also loose your high beams.