1963 - 1975 Corvette: Schematics: Hardtop Wrench and Drawstring Bag Estimated Reading Time: < 1 Minute 1257 October 11, 2015 General Topics, General Topics 0 1.16K Below are Chevrolet Engineering Schematics for the hardtop wrench and drawstring bag used on 1963 - 1975 Corvettes.