Just upgraded my sons base V6 audio. You wont believe the crappy speakers that Ford installs. Chinese garbage. Upon alot of searching of forums we went with Pioneer TS-6802R for the front and rear and an MTX thunderform base module in the trunk. Sounds way better even using the stock HU. Alot of folks are also happy with Infinity speakers as well. There is no easy way to add door subs to your car so if you want more bass, a truck install is the way to go. Both MTX and JL make a form fitting bass housing that fits nicely in the corner of the trunk on the passengers side. We ended up getting the MTX because of price, $419 for the loaded box with amp.
2013 GT, AT, JBA ceramic LT with catted H pipe, resonator delete, GT500 axlebacks. Steeda CAI, Brenspeed tuned, AMR chrome wheels, Cooper
RS3-S tires, Focal door and rear coaxial speakers, Shelby-Kicker door subs
2013 V6 performace pkg, airaid CAI,BBK throttle body, Bama tuned, MTX thunderform, Pioneer Coaxials, alpine KTP-445U amp
The love of my sons life