Muffler sound

I haven't decided on mufflers yet for my '69 Dart, but received new 3" mandrel bent exhaust system with the project from the previous owner.
I got to agree with the prior comments about flowmasters. I had a dual exhaust system with flowmasters on my old '77 F250 behind the 460 and the drone was terrible. It would also set off every car alarm on three floors if I rumbled through a parking garage.