In 1988 the factory put a cat in the exhaust. It also would have had fuel injection and a computer, and thus no choke. In short this truck was very much not stock (or possibly you are not in the US?) and so it is interesting but not helpful for the discussion.
Sigh. You didn't even try thinking and vomited out a bunch of nonsense. See the brochure this poster found, same one I have somewhere at home: https://news.ycombinator.com/item?id=48203115
