13. AMC AMX
The main difference between the 1968 AMC Javelin and AMC AMX was that the AMX was a two-seater model. Interestingly, it was the only two-seater on the U.S. car market other than the Corvette. With a shorter wheelbase, 390 V8 engine with 360 HP, lots of go-fast options and a reasonable price, the AMC AMX was a capable muscle car.
The Javelin proved to be a sales success but the AMX was tough to sell. People wanted more room in their muscle cars, so a two-seater AMX was rather obsolete. It lasted on the market for two years. But although it was successful in many drag racing championships, the AMX is a forgotten, obscure muscle car.