I haven't done HID's on my Aspen yet and probably won't until I get the correct style headlamps for them. I have installed them on my Accord though with aftermarket projector style lenses. As 15951 mentioned, placing HID's in factory Halogen style lenses will not yield the desired effect as one would hope for. The pattern will not project properly and you will be blinding oncoming traffic. You really need projector lenses to be able to focus the pattern. Not sure if anyone sells aftermarket headlamps with projector lenses or not. Still searching for parts. However, if none are available, you can find someone who knows how to retrofit them. I've seen lot's of people do that.