you would most likely need a line adapter so you could hook the subs into the stock wiring, they run around 50+ from what I understand and it almost makes it the better choice to just get an aftermarket radio.
oh, well id rather keep the stock radio without bass then have a cheap flimsy looking aftermarket unit.
2016 Mustang GT 5.0 Magnetic Metallic Performance Package
Interior - Recaro Bucket Seats, Weathertech Digital Fit Floor Mats, Diode Dynamics LED Visor Mirror Lights, LED Glove Box Light, LED Trunk Light, and LED Map Light
Exterior -Dealer Installed Shelby GT350 Racing Stripes, SunTek Carbon 15% Tint, Diode Dynamics LED Switchback Blinkers, LED Reverse Light
Performance - MBRP Race Series 3" Catback