[timothale]

Ford did a lot of strange things, changes not always in documentation you can find, passenger car 5 X 4.5 wheel patterns on some light duty pickups in the late 70's early 80's, they did not sell many. I worked there as an engineer and tried to get them to let me keep My bookcase full of Mustang documentation I had in my office, some japanees car companies got confidential information, some people got fired and they were very strict about destroying things that would be valuable to restorers.