This would have to be an import or a diesel conversion, diesels were only offered in the first generation trucks from 83-85 in the states. If I were you I would look to see how well the conversion was done. Is there a push button for the glow plugs or are they running off the OEM computer? Did they spend the extra money to get the right Speedo and Tach cluster? Did they install a hyraulic clutch or is the truck have a cable clutch? Did they carefully remove and reuse the diesel harness or did they hack it all to pieces. There are lots of things to look at.