I have a 1958 Chevy Fleetside shortbed with the big rear window that has a paint code of 331A. I have checked all the 1958 paint codes and can find nothing concerning any such paint code. The truck is two tone Gold and Off-White. When searching the paint codes the closest color match is Anniversary Gold 918A and Honey Beige 938A. These colors are the GM anniversary codes. The truck is pretty much original but has been painted another shade of gold and white. The truck has cloth door panels and off white and gold arm rest. The firewall and back of truck still have the original paint as well as other areas under the deluxe trim. I know that Chevy used the Anniversary Gold and Honey Beige scheme on the cars and trucks in 1958 but the trucks had SPEC on the paint plate. I suspect that they changed the code from SPEC to 331A but I have know confirmation of this yet. Does any one have any info on this? Thanks, Tom