Mcannix,
I am not trying to be argumentative but that is not what my 1969 340 cars came with. I have had a 1969 340 Cuda and Dart and both came with stock pipes and I kept the front sections from them. I replaced them with original pipes; one in 1976 and one in 1980. These shots show what the originals and replacements looked like.

I can tell you Arvin and I think Walker and AP and Goerlich had the single piece pipe but the dealership original and replacements on my 69 340 were like these images show; 2" from the manifold and then they crushed down to less than half that then went up to 2.25 before the crossmember.