They may not fit perfect but if I was a bettin guy the would be a great high altitude pipe. I put SLP 700 pipes on an 03 800 and wow! Had to make some adjustments. Also opened up the stingers a bit.
picked up cuttler twins and an attitude fuel controller , any body runnin twins on the m8 and do they work good, i will need clutching probly try cuttler for that to i guess:d