TTI Exhaust question

I have only a hi-compression 367, (230/237/110 current cam), with TTIs, a full-length 3"system, and the supplied Dynomax muffs. Had it since 1999.
It fit like a glove, is still on the car 25 years later, and I have no complaints, even with the H cut out of it.
And, I have never gotten a ticket for it being too loud.
I have overdrive, So 65=2240, and not too loud to cruise with.
Even took it on a trip to Shakopee Min Car-Craft show, geared 85=2100.
Before I had the od, and with 3.55s, 65=~2900, 60=~2680, there was no drone with or without the H. I ran that way (no od/with H) for 4 years.
But the Dynomax beasts are heavy! That's Ok, I got/had a super hi-pressure 360, at that time, 190 plus psi..
Great sound, too. I got my son to run her by me a couple of times ; hoot, hoot!, loved it. My neighbors loved it too, I mean they told me so, and not a one of them ever came to my door complaining.
So there's that........ lol.