Check your smog requirements. You can't run headers (legally) in Ca. The Long Tubes are ILLEGAL because they eliminate the CATS.
Check I heard that someone on here said the JBA shorties were Legal. Might check with BBK on there shorties.
Also, you can't make a V6 sound like a V8. You can buy a V8 and that will take care of your problem.
2013 Silver V6 Premium, Ford Racing Handling Package, MGP Black Caliper Covers, Airaid CAI, Bama Tuner, BBK Catted X-Pipes, Ford Racing Sport Axle-Back Exhaust...Alum One Piece Driveshaft, BBK Ceramic Shorties, Whiteline Adj. UCA, Whiteling ADJ. Lower Control Arms, Whiteline Adj. Pan Hard Bar, Upgraded Rotors (Cross Cut and Drilled), Ceramic Pads, J&M Stainless Steel Brake Lines (Front and Back), 18" Staggered Chrome Bullitts, MMD Eleanor Side Scoops, Side Scoops, Roush Front and Lower Grilles and Super Snake Stripes.