i went from a dead stop to 180 mph (gps verified) in less than 1 mile, back when my viper was stock. i was pulling somewhere between 5,500 rpms and 6000 rpms in 5th gear. i don't think my viper has the kind of power i want to pull 6th gear. but they say 6th gear is good for 192 mph in a stock viper. if i had a 200 horse shot of nitrous i would hit it in 6th gear and try to go 200 mph. come to think of it i have always wanted to go 200 mph. i just might try that. nos makes a nice dry kit nitrous system for our vipers. its a good thing i still have those 3.07 gears in the rear end. i have gone 157 mph (gps verified) on my motorcycle in 5th gear. i have a dry nitrous kit (40 hp shot) on my bike that i am gonna hit in 6th gear and try for 170 mph.