Did you know that the Dodge Viper was the only V10-powered American sports car available in the ’90s? While the original concept car was laughable to some, the first production saw minute improvements that then snowballed into the future model generations that we know and love. Borrowing its engine design from trucks of that time, the 400HP V10 was loaded with torque. The later generations would see a massive increase in horsepower, jumping to 645 by the end of their run. The Viper was unique in so many ways, and the number of changes it went through during its lifespan might surprise you. See below for a recap and get all the Viper history here. We want to know – what model year Viper was your favorite?