2 valve Norge is a real pleasure to ride...will do well above 100...and brakes are quite good. Once you get the suspension sorted, and any turbulence from the windscreen (entirely dependent on your height and possibly the top box), it's a pleasure to ride all day long, and will carve canyons beautifully.
Two Wings and I were running at 130 mph a few years ago across Utah on our way to John Day in Oregon, and he pulled away from me quite nicely into the distance. I didn't feel the need to push it anymore, but the bike is super stable and planted at that speed.
Come down to 70 mph and it feels quite slow after an extended high speed run like that...
Norge Riders Unite!