To an ordinary person, ZL1, COPO, L88, SS, RS, Z/28, Z06 may look like a bunch of codes with no meaning or context. However, for car junkies all over the world, they hold special significance. Denoting Chevy&rsquos mid-century order codes, they were cars that were frequently swooned over by automotive enthusiasts and collectors at the classic car museum Muscle Car City in Florida.