not really, some guy in England took two ZX-12R engines and strapped it to a modified go-kart, 0-60 in sub-4 secs, those ran from 30-60K pounds easy. Some press from Speed Channel blew one of the engines when he over-revved it. he also had busa engine put into different models, he'll buid whatever to customer's specification. and those things can HANDLE as well as go fast.