I do have under chassis photos of the exhaust with the car on my lift but since Photobucket went bonkers I don't have them on a share site any longer. If you are interested and want to provide an email address I could email some to you.
My GT350 is a 17 model with about 10k miles on it now. How is your 2018 doing?
The Plymouth is a full power/factory air 1967 440 Plymouth GTX.
I couldn't persuade my wife to move out to where I had enough room to build a proper shop building so I had to compensate as best I could with squeezing in as big of a garage as I could. We have two double garages with the one I use as a garage for my hobby cars and for my shop oversized to squeeze everything in. Works but sort of crowded.