How do you tell if a truck is a CST model or not? My 71 has a "CST" emblem on the glove box door. It looks original (very old)The VIN listed on the option sticker on the door matches the VIN on the drivers door sill so I assume the glove box door is original to the truck. The option sticker does not list anything related to "CST" or cheyanne trim. The doors do not have the little "CST" emblems on them (or any other trim on the outside). It looks like the PO shaved all that stuff off and patched any holes in the body, but I can't find any patched holes in the door when I look at the inside of the door to confirm. (Doors look original too) Anything else to look for to tell? I heard the bed on the CST had some clips or holes for some side panels that went over the wheel wells? I don't have AC which I thought all CST's had? Maybe the PO added the emblem on the glove box?