Ditch,
The BUBs megaphone or Dresser dogs are no longer being made. You might be able to locate a set online, but I am pretty sure BUBS doesn't have any more at the factory ( I live just 25 miles from the factory) I have the dresser dogs and really like them, the look and sound. Loud but not too loud and like the look of the shorter pipes. The slash cut's are still being made, but I have not heard them in action.

BA has Freak, 160mains, 44pilots, air mix3 1/2 to 4 turns, BUBS dresser dogs. Never had more fun on any bike - 2nd bike 2008 RIIIT