15 Muscle Cars That Were Born to Break the Rules—And Did

13. 1987 Buick GNX

The 1987 Buick GNX shattered muscle car conventions by dropping the traditional V8 for a turbocharged V6.
This technological marvel delivered blistering acceleration, outpacing many revered sports cars of its day—including some Corvettes and Porsches.
With stealthy looks and jaw-dropping speed, the GNX became an instant legend, showing the world that muscle could come in new forms. It remains a symbol of audacious engineering and rule-breaking performance in the 1980s. Car and Driver