I just purchased (but it's not yet built) a 2002 Mercades Benz SLK 32 AMG. I just learned of it's proprietary BOSE/MB fiber optic network data highway control system that is all integrated in the vehicle. The damn thing comes with a tape deck and the only upgrade option is a CD changer in the trunk (yuk). Does anybody know of a way I could connect the Riocar head unit in to this car?? I know there's issues with the 4V RCA outputs, but I just need some type of interface to the car's system so that other hardware to convert that signal could be purchased. Please help!!