they sell the mirrors for the M5 on
www.beastpower.com for $895. I just used it for the M3 as well. It looks pretty cool, and basically makes your radar detector invisible. The V1 is hardwired into the cars. It also displays the info for the lidatek as well. Lidatek is at
www.lidatek.com Hope this helps. They may make mirrors for other cars as well, but I have no idea where they would sell them.
'03 H2 Sunset Orange No mods
'03 BMW M3 Convertible
'02 BMW M5