The AMC AMX, built from 1968 through 1970, was one of the only two-seat sports cars made in the U.S. when introduced.

(Squint your eyes and it’s a Porsche 928.) And for a few brief years, AMC made some truly exciting cars, including the AMX, Javelin, Hornet, and Gremlin X—a caricature of a car powered by AMC ...