My 2015 has the standard radio with nav. How does it compare to the JBL? Is it a direct swap between the two? Is it worth swapping?
You might be better off simply upgrading the speakers in the doors. I did that on my 2005 and the improvement was noticeable. My only regret was that when I had the interior door panels off I didn't install some sound deadening on the exterior panel. SM-G900H ?