Installing Accurate dual exhaust on ‘67 Barracuda

that explains it, the 340 manifold pipes are different. However, I have an accurate exhaust system on another 69 Dart I own with the 66 273 HP. 2 into one single exhaust diameter system, 2 1/4 exhaust diameter. , and
single exhaust. So I will try to get a picture of the tail pipe and clamps to show where the muffler and tail need to be as OEM.
this exhaust system came from accurate as well.

If you have a 273/318 in a 67 Barracuda that is the exhaust you needed for your car in my opinion.it would look perfect, and flow very well. The 383/440 engines with single exhaust had the same 2 1/4 diameter pipe.