I have to agree with Belair62. I believe his definition is 99% correct. Any dealer built performance car and almost all COPO's. All COPO's with a performance engine would qualify. Special order paint through the COPO program would not apply. I believe a 396/375 Daytona Yellow Chevelle painted through the COPO program would not be a "Supercar". And obviosly taxi cabs, telephone trucks and what not would not be. Although the tri- power Police cars that went to Nevada I think would certainly qualify.Feel free to correct me if I'm wrong. NWYenko, according to your picture, you have two "Supercars" although the other one looks super too.
Peter