4. AMC Matador X
When AMC discontinued the Javelin AMX, they were left without a muscle car in their lineup. So, they quickly decided to introduce the Matador X. AMC redesigned the Matador for 1974 featuring the signature coupe body style that was fairly aerodynamic.
Soon the company presented the “X” package, which buyers could get with a 360 V8 or optional 401 V8 delivering 235 HP. Regardless of the dress-up kit, big V8 and all performance goodies, the Matador X wasn’t any faster than the Javelin. So, AMC killed the option after only one year.