In its heyday, the '79 Buick Regal equipped with the 4.3-liter V6 reportedly produced nearly 120 horsepower and 210 lb-ft (285 Nm) of torque.

Back in the limelight in 2024 thanks to Kendrick Lamar, these hot Buicks defined American muscle in the 1980s.

Visually, the differences between the Buick GNX and the Buick Grand National were more subtle. That was by design, given how much of an impression the all-black Regal coupe already made.