The 3 inch is not going to help, and the V6 in this car is so much different than the old school motors.
Then you have extra drone and rasp, neither one go well with my old ears.
I have short tube BBK headers on mine with 1 of the mellowest axle backs that to me sounds great, but everybody has different goals.
2013 V6 MCoA, Performance Package, Security Package, Comfort Package and Electronic Package.
Mods OEM Backup Camera, BBK Shorties, FRPP Cut and Clamp X-Pipe, Borla Touring A/B's, Airaid CAI, Axle Xchange 2 piece aluminum Driveshaft, Koni Sport Shocks and Struts, Vogtland V6 Leveling springs, Ford Racing 302s wheels wrapped with Continental 275/40 19's, JBL GTO 8628 6X8 in all 4 corners. 2013 F 150 FX2 With a 6.2 Boss