RNS-D doesn't have Bluetooth either though so what would be the point?
Its even more of a waste of space than the Symphony since it comes with the GPS wart on the boot lid and obsolete nav. That's why mine went in the scrap pile, replaced by a modern(ish) MP3 head unit with built in Bluetooth and USB ports
Edit: do you mean to get a CD changer port for the Xcarlink? Its been a long day