69 Dart/Barracuda 340/383 tail pipe size?

I applaud the guys that take the time and effort to restore their cars close to original. I suppose these exhaust
discussions will go on forever.In my limited experience i've found the factory usually got it right and after market pieces quite often are a step backwards for all around street driving.
As do I, but I also applaud the guys that go to the trouble to get a complete 3" system to fit and work correctly, without hitting anything or getting too close to something to melt it or cause a fire. It's not as easy as people think to modify these old cars. Those factory engineers were pretty smart.