The problem you'll have with installing it on a newer than 93 model is if there are any problems along the way Rancho most likely won't want to be held responsible. Blazair is right though, the S-10 is the same throughout 83-present. The reason Rancho doesn't show more current information is because they have not physically installed the kit on a newer than 93' model.
The other problem with the Rancho kit - it has been discontinued. They are no longer producing this kit. Whatever they have left in current inventory is all there will ever be. The S-10 kit was a super slow mover for Rancho and they dropped it from production a while ago. When the current inventory of parts is gone, it will be next to impossible to get warranty replacement items should anything go wrong.
Aloha