RECENTLY BOUGHT A 2005 HONDA 450, IT IS TOTALLY STOCK AND I AM NOT TO FAMILER WITH ALL THE NEW PRODUCTS THAT HAVE CAME OUT FOR THESE FOUR WHEELERS, NEED HELP. I AM NOT LOOKING TO SPEND A GREAT DEAL BUT I WOULD LIKE MORE POWER AND EXHAUST. I HAVE CALLED AROUND LOCALLY AND EVERYONE HAS GIVEN ME DIFFERENT ANSWERS ON WHAT IS THE BEST FOR THESE BIKES, SO I AM HERE ASKING THOSE OF YOU THAT DO HAVE THE SAME ON WHAT IS GOING TO GIVE ME THE BEST PERFORMANCE OVERALL!