what is the best bang/4/buck on mufflers for a stout 340?

Your local muffler shop will have (they should my does) a generic form of a turbo muffler as well as chambered muffler. They're cheaper and you don't have to pay shipping. Back yrs ago my muffler guy offered me a deal on some turbo mufflers. I told him that I already had the mufflers but by gosh his looked just like mine but without the name stamped in the casing!!