I have a '99 996 with the original CDR-210 head unit, 6 disk cd changer and M480 amp. I am considering switching out to a CDR-220 to get the AUX input for an iPod connection. Would this be a plug and play upgrade and would the 220 give any performance improvement? If not would a CR-23 switch make more sense, assuming it is even possible? I know the stock systems aren't great but I prefer the look of them in the dash over the more modern units.
Appreciate any guidance. Thanks.

 

I think you can add an AUX input to your system. Hopefully someone can chime in.

I believe the CR-23 route won't work because of the "new" MOST system (fiber optic stuff) that started for MY2003. Your system is better, easier and cheaper to upgrade than the ones with the MOST system.