This is a great thread! I just took delivery of my M3 on Saturday and will be doing the retrofit. I'm debating Euro bumper or filling the reflector holes on my current bumper and drilling the necessary pilot holes.
Silly question, though... our cars look like they are optioned similarly. I have the rear sunshade, start/stop button, etc. I noticed that the front panel switch kit has several blanks with LED lights above the buttons. The left and right buttons are for seat heating. If you turn on the seat heaters using the climate controls, do the lower LEDs also light up?
I'm thinking about replacing my climate control panel with one without the seat heating buttons if they do light up.