Do you have any drone around 2k rpm ? I installed JBA LT's, and a catted H mid section....and also FRPP FRS-500 mufflers. Bad drone at 2k rpm. WAY too loud for my tastes. Fine if at idle, or < 1.5 k rpm. Get my foot into it, even just a bit, and it's too loud, novelty wore off in < 2 weeks. My fix was to weld in a pair of 304 SS Pypes M80's... which are just SS resonators. Had them welded in, just before the rear axle. Problem solved. Drone is all but gone..and overall level was reduced a bunch.
Loud exhaust is one thing, but when I can't hear the stereo inside the car, with windows up, it's over the top. I also have to be able to leave late at night, and come back late in the early AM. Neighbors were pissed off asap, before the resonators were installed. It's still loud, but not obnoxious. Overall pitch dropped to a low freq rumble type of sound, which suits me just fine.
That blatty / trumpeting tone turns the car into a blatmobile. M80's are cheap at AM. Almost any quality resonator will do the job. Instead of using the clamps, I cut the slotted portion off on each end of each M80, then had em welded into place. 304 SS is shiny, and stays shiny after years of use. Resonator's like M80's are essentially like glass packs, just straight through pipes, with the small holes around the circumference on the insides, with the baffling material between outer SS casing and interior holes.
https://www.americanmuscle.com/pypes-m80-muffler.html