S60 w/ Navigation Aftermarket Stereo Possible?
 

Hey guys!

Currently in the market for a new car. Love the look of the S60. Looking at both a 2014 and 2015 to be specific. Both seem to have the integrated navigation system, and adding an aftermarket stereo solution seems like it'll be one heck of a time.

I'm coming from a Saab 9-3 where it's not possible at all to replace the standard head unit as it's apart of a fiber chain that directly interfaces with the ECU. So removing it would essentially render the vehicle useless.

What I want to know is...

1. Is it possible to replace the factory unit with built in nav system?
2. What's the effort required on a scale of 1-10?
3. What do I have to look out for?
4. Should I attempt to look for an S60 without the nav system as it seems like that's more a straight forward setup?