problem with the busa is you're racing it out of a dig, which limits the amount of power it can put down, thats why it did so well on a roll because the rider can get closer to WOT without getting bucked
gtr's are butter at 160, they only start to feel fast at 180, i'm sure they're not to scary at 200 on roads like that
the only thing the busa needs is a bigger top end and some spray