I took pictures for the whole install process. I'll post a "how to" if there is enough interest. It's pretty easy though. I can do it in under 5 minutes for both sides. The first time you do it it'll take some poking around and take up to 30 minutes to get it right. If an oil change on the Elise is a 3/10 and a headlight change is a 5/10... I'd say this is a 2.
They looked just as bright to me?
The Youtube video I posted is the Stealth bulb, I didn't see any noticeable difference between that and the stock one.