The Viper ran a 6.407 in the quarter today, I think it was. Wow. It is running a different kind of engine; Maybe a Steve Morris SMX. Unless I am mixing up engines, which is very possible. It's definitely not a V10.
6.407 sounds about right. I know it was a couple of tenth's faster than anyone else has run this year, and he had to pedal it, too. I remember hearing "SMX" when they talked about it but wasn't sure what that was.