The early hrc is top end and late one is bot and mid oriented(the one I have)Never had a St. II, I bought the 450 pretty well stock with an HRC kit.
I heard the HRC is more top end oriented which suits me fine, I'm used to feathering the clutch like a 250r
looks real good. like everyone said just the right amount of yellowgot to take it for a spin though last night, this thing is a BEAST. Not too much power or snap but I noticed I barely have to shift If I dont want to.. Come out of a tight corner in third and hold the throttle all the way and it will pull it.
My buddy on a yamaha didn't have much to say when I passed him a few times haha