I'm interested as well, but would like some more details. I have a 06 M Coupe w/ HIFI SYSTEM PROFESSIONAL (S677A)
alvinli217, there is a thread on here (
http://www.zpost.com/forums/showthread.php?t=302570 ) which has a csv file with all the NA M production information. You should be able to find your car on the list and see what it came with from the factory.