By 1987, the ahead-of-their-time muscle car builds were also fronting a new suffix, in the guise of GNX. While some Buick devotees were no doubt confused by that suffix, it was quickly revealed ...

As difficult as it may be for modern audiences to believe, Buick built a supercar in the late-1980s by slinging a turbocharger under the hood of a midsized family car and cranking up the power.