I have a 2016 Mustang GT Premium. I have the 9-speaker system, but wish I had purchased the Shaker system. Any ideas for upgrading my audio system? Thanks.

 

I have the standard 6 speaker system and had a local stereo shop replace my door and package tray speakers with Kenwood Excelon speakers and add a ported 10" JL Sub with big amps for each pair. Sounds pretty damn good if I do say.

 

I appreciate your help. The 9-speaker radio is good, it's just missing something. One guy recommended a powered subwoofer and changing the speakers. I like great sound, but I like beaten Chevys more. So I have to decide where I want to spend my money.
Take care.