I took one look at this post and the pictures and went a little nuts. point. click. I installed them last week and it was every bit as easy as Blake described. It's a great look for a modern car which the M3W is and the beam pattern at night is the best! By far some of the best lamps I've ever used and none of my cars in the past went without significant upgrades since the stock lamps were found wanting.
I have always lived in the middle of the country and we don't even have a stop light. Maybe a half dozen streetlights in town but it is dark here and I hate hitting deer! Hitting one of them, or worse a moose, would be a really bad day, probably terminal.