Sorry it slipped my mind since the first thing my dad said when he walekd in the door was "I brought it home in a box again" in case you didn't know a chunk literally blew out of the motor. Took it in for them to replace the engine today. Not sure when we will get it back. Anyway they ran 1000'. At the end of the 1000' the Viper Speedo read 100MPH and the radar gun read 89MPH. He has seen the Speedo reach about 108-110 so we figured the top speed on a long run is 100MPH. My uncle ran his 2002 ZR 800(pipes, clutch, airbox) and it ran 96MPH in the same 100'. His speedo read 110 at the end. Those are the only two results I was told I will ask my dad and Uncle about the other sleds. Sorry again it just slipped my mind was too pissed at the sled.