I just installed a set of the new generation SBN that I bought from a gent that sold his Norton. Definitely a steeper upswept angle. They sound a little raspier. I like the original SBN a little better. Deeper and throatier just a touch but both are excellent. Happy about the way they are on hangers too. So......last piece of damage to change is the primary cover. I'll get to that later on. I'm having too much fun.