I am trying to choose a bolt-on muffler for my 04 Triumph Daytona 600. There are not alot of choices out there meant for the D6 but all 98-02 ZX6 bolt-on mufflers will work. Trying to go cheap this year full system next year when there are more choices and lower prices. I was thinking about either a M4 or a Scorpion but have never seen neither of them up close. The M4 is aluminum the Scorpion is polished stainless steel I would guess the M4 is lighter but I could be wrong. What you guys think input welcomed. Would love to put on a Akrapovic but they are pricey, any buddy got a in good shape used one?