2001 - bought it used and haven't changed anything yet. Currently on the way are some riser extensions though as the drag bars hit the tank and I don't want to commit to any real purchases before I've determined a good direction for the bike. Previous owner did the drilling to the muffler. I had not realized that wasn't a standard issue detail until reading on this forum. I've got a welder though and fully intend to correct that. If an engine displaces less than 6 liters or won't turn more than 10k rpm, nobody benefits with it making a lot of racket.