I'm looking for a slip on, hopefully akrapovic but would also use a yoshimura TRC or Yoshimura r55. When I'm searching the net I'm searching for "r6 akrapovic" or "r6 yoshimura" . Could I search another bike exhaust that would fit mine eg; "gsxr 600 slip on" I don't know if an akrapovic or yoshi from a different bike would fit. Any ideas 