Hey Sam,
I got some info that may help. I got the story on the truck.
We bought the truck out of georgia.
The Guy that we bought it from. had gotten it when his dad passed away. His dad bought the truck brand new off the showroom floor. So maby that may help explain the early production date. (i'm thinking it might be a dealer display?)
The guy drove the truck up until 1991 when the fuel pump went out and he parked it. It has been sitting ever since. We put a new fuel pump on it last week and it fired right up. I think it has a little over 100,000 miles on it. Hope this helps.