Has anyone added the bluetooth and nav options after buying their cars? I'm wondering if that is a possibility. I've seen lots of used B7s with the other options that I want, but none with everything; usually bluetooth and nav are the missing options.
If this is possible, are these DYI projects or best left to a shop or dealership.

Thanks! This is exactly what I needed. This forum is great. I hope to have a B7 soon.