1991 Specialized Stumpjumper Comp all original except tires, chain (still have it but quite rusty), and tubes; however, the left crankarm dust cap was missing. Since then, I've added an old Cateye Enduro computer, Bushwhacker saddlebag, and a handlebar bag. The cover at the nose of the saddle is unglued and had to be taped back together as well as having a few small tears. The red water bottle holder is Specialized branded.
90's Specialized catalogs can be viewed here. (In German, but at least you have a reference and pictures.)
Personal reviews of the 1990s Stumpjumper (wide range of years).