18. 1999 Pontiac Firebird Trans Am
The horsepower wars were raging in Detroit as the ’90s came to an end. One of the biggest winners was the 1999 Firebird Trans Am. With a new restyle, updated options, and an upgraded 5.7-liter engine, this was the model to beat in 1999.
The power output was a whopping 305 HP. They also equipped it with a six-speed manual transmission. That made the Trans Am one of the fastest American production cars at that time.