CDR23 / Bose System help please

[eicheldp]

Hello,
I'm a new owner of a 2004 S Triptronic that has the CDR23 & Bose system still installed from the factory. I would like to replace the CDR23 and purchase something that will allow me to plug in my Touch or iphone and have Bluetooth capabilities.

I hope someone can provide some advice to a newbie. Do I need to remove the Bose system or can a new unit be wired into the Bose?

Thanks in advance.