9. 1970 Buick GSX 455 Stage 1
The main goal of Stage 1 version was to compete with GTO Judge, and it offered 455 cubic inch powerplant good for 360 hp and 510 lb-ft of torque. Interesting to note is that this was the highest torque rating for any US performance model and it lasted until 2003 when Dodge Viper came with the V10 engine.
