Originally Posted by bigaudiofanat

A few things about your bose "upgraded system"

If you want the factory nav your going to have to get a z with it, you would have to replace a great deal of stuff to the point it would not be worth it to get the stock nav installed. Basically it can not be done.

Second a lot of people will chime in saying that the bose system is actually worse than the base system. I agree. And no matter which one you get a new head unit and a set of aftermarket speakers will blow both systems out of the water.

My advice get the upgraded heated eats if you want them and invest in a good aftermarket system. If you search the audio section you will find a lot of threads asking what to get. That is where I would start.

Also here is some more info on the bose system, pretty big pain to upgrade.

What to know about Bose