There were two versions that seemed to be prevalent on the assemblyline for the trunk lid. There were later service replacements that were different yet still. It had to do with the number of grate openings in the mesh from top to bottom.The later service mesh was smaller and had more grates when you counted them top to bottom. One of the hazards of the service mesh is that you had to be careful all the pieces matched (same size mesh). Shelby Parts and Restoration had made up some excellent reproduction. I believe the mesh was bonded in the fender scoops after painting so they didn't have to worry about overspray masking or compound when polishing. I hope this helps. Bob