IF YOU'RE OLD ENOUGH to recall the heyday of the C3, it's likely you also remember the Corvette Sportwagon. Originally designed by Chuck Miller (and later adapted to the rubber-bumper '74-'82 Corvettes by John Greenwood), the Sportwagon and Sportwagon body kits were marketed through such companies as American Custom Industries (ACI) and Eckler's, and they allowed owners of C3s to convert their coupe or convertible Vettes into cargo-compatible wagons.
Corvette Sportwagon - Vette Magazine