2005 Mustang GT- cams, headers, GT500 mufflers

Bought these '07-09 GT500 mufflers a few months back, not sure why they are so loud but these are my favorite mufflers I've ever had on the car. Loud but not too loud, sound great, and very little drone except for a little bit at 2000 RPM in 5th gear.
Car has Cushman Motorsports Stage 1 cams, JLT CAI, custom 93 octane tune by Lito, charge motion deletes, underdrive pulleys, JBA long tube headers, JBA catted shorty H pipe.
Video sucks because I set the camera up wrong but this is more just for audio anyway.