I made a little video for you today.
This is my Dart,
318 4bbl, with 340 cam, 340 exhaust manifolds, 2-1/4" dual exhaust with an H-pipe, and Walker Quietflows. Not sure what you meant by SS, unless they make a stainless steel version. Mine are not stainless.
Anyway, maybe this will give you an idea of the sound and volume of them. I've never tried the super turbo's so hard to make a comparison.
I like these a lot, nice sound but not loud at all. Very quiet inside the car when on the road, and no droan. When driving I hear the engine itself more than I hear the exhaust.
Enjoy
https://www.youtube.com/watch?v=zfJi9goaLqQ&feature=youtu.be
