Just joined from Guilford, CT. Hoping to get some ideas for a custom install on a 2007 M6. Currently I am using only a Passport 8500. I also have a Cayman S and am a previous M3 owner. I have about a 20 mile daily commute along I95 and run into a State Trooper with a laser gun on the side of the road about once every other month. I'm grateful that this site exists and for all of the great information and advice that its members provide.