Can you upgrade phone or navigation systems in 2004 CLK's?
 

I have a 2004 CLK500, and have noticed that the 2005 model has made some dramatic improvements in the phone and the navigation systems. On the 2005 model you can now order the V600 and V710 phones as well as the V60 that I currently have. In addition, they now have DVD navigation (one disc) as opposed to the outdated multi disc CD system that I have on my 2004.

Are there any kits that Mercedes service can install to upgrade either the phone or the navigation systems on my 2004?