I have long tube headers with quiet pipes. I like it. The induction is much louder than the exhaust. I've got a single plane high rise manifold with a 390 holley. You can literally peek through the carb and see valves. That along with with the small venturis make for a loud combination when my foot's in it.
The mufflers are 20" X 11" X 5" with 2.5" pipe. They tuck in nicely. I don't have a sound clip, but they're Cadillac quiet.
