2 pieces of info for you doug, etc anyone interested..
93 was the start of the 3 generation right, well in 95 Ford did an interior facelift (single din radio became double din, etc) - I am pretty sure the door panels changed too, which is why 93-94 is a unique no interchange 2 year run.
As far as generations go, Jim Oaks (the owner of the site) did an excellent job of detailing just what every generation is. And like every major manufacturer out there when the sheetmetal changes it is called a new generation. Except in 89 when Ford changed the sheetmetal, they called that an "exterior face lift" . So Ford, wiki, every joe schmoe with a keyboard who wants to write an article for track and field copies each other and wiki and calls the first gen 83-92. I would argue only us, the members of TRS know what's correct.
Generations are something that enthusiasts (not Ford) have placed on Ford Trucks based on body styling. Here's the Ford Ranger generations.
www.therangerstation.com
There is a whole huge section of TRS that is neither forum nor tech library, it is the articles section...