Dual Exhaust for 360 in '67 Dart

Shorty headers throw away power everywhere.
The TTI system from header to tail pipe tip is being used on the wife’s ‘67 Cúda. Minor resonance at a low rpm which can be cure with a glass pack in front of it or a pressure way cancellation box or a J pipe to cancel sound waves.

We have the short Dynomax turbo mufflers. I’m not sure the longer ones can be used due to available area. Check a/TTI on that or someone here will chime in with that information.

Don’t bother on necking down the exhaust pipe after the muffler. It’s more of a PIA to get or have it done. Just stay with the 2-1/2 all the way. It’s easier and it’s not loud.

The most quite muffler I have ever used is a Dynomax/Walker stock replacement type. There’s a series called “Sound FX” that has a minor rumble, very minor. Modern trucks are louder.
Whoops, I also forgot they have a series called “Quite Flow” which it certainly was. Click below:
Walker Exhaust 21856 Walker Quiet-Flow 3 Mufflers | Summit Racing