Whats the part number for the OEM MS3 deck w/ BOSE vs. the OEM Mp3 deck? I'd like to keep the stock stereo as it fits my needs, but I miss having the Mp3 option that my old Pioneer deck had in my Protege5. If I swap out to the Mp3 version, will I lose my Bose option and steering wheel controls? I've tried to google search this as well as checking MSF for more info, but I haven't found anything.