I bought my 83 C20 454 with dual Midas turbo mufflers on it. 13 years later they are still nice and quiet, the way I like it, and performance is not an issue. I suspect they are just a common stock muffler, like Walker or something, with their name on it. Whatever you buy should last a long time in our neck of the woods with rust not being much of a problem, so you should select mufflers you can live with sound wise. I want to save what is left of my hearing.
