What to tell the exhaust shop.

My 64 Dart was a 225,Clifford intake,600 AFB, Clifford headers 2 1/2'' from header flanges into a "Y" pipe,O2 bung,IMG_1958.jpg 2 1/2 single pipe to the back bumper.Only photos I have for you.Pipes were homemade on this one.The Y was made at the exhaust shop.IMG_1957.jpg