i have a 2005 c230 and was looking into getting the navigation unit for my car. would it be a easy transition? could i just take out my stock radio and install the stock nav unit? would there be a problem w/ getting the satellite radio? and i have a cd changer in the glove box, would i lose the functionality? and one last question...does anywhere besides the rip off dealers carry them?

 

Search on ebay. There is a lot of electronic parts there.

 

crutchfield.com has a "will it fit my car?" section, and a pretty decent selection of nav/sat radio heads