To correct a misconception, The AMX wasn't plastic or fiberglass. So go on and enjoy the only steel two seater of it's time... Mr Natural

Too bad the javelins and amx-s were all such plastic crap. some of them were way fast.
Mr Natural

But they weren't. They were steel.
The AMX was touted as the first steel-bodied, two seat American performance car since the 1957 Thunderbird
http://en.wikipedia.org/wiki/AMC_AMX

The AMX was the only American steel bodied two seater of its time.
http://www.angelfire.com/my/amx2/amxhistory.html