20. 1974 Pontiac GTO
The 1974 Pontiac GTO marked a dramatic shift, moving the legendary muscle car to a compact platform based on the Ventura. Powered by a 350-cubic-inch V8, it offered respectable performance but couldn’t match the brute force of earlier GTOs. This final iteration of the GTO symbolized the end of the golden age of muscle cars, as new regulations and changing tastes reshaped the automotive landscape. Still, the ’74 GTO remains a significant chapter in muscle car history.