This may be old news to some, but I hadn't seen it before - I was poking around on Ford's Fleet Vehicles site and came across this page:
The Body Builder's Layout Books for the various model years include information for the Ranger, some of which I haven't seen in either the Owner's Manual or the Factory Workshop Manual.
If you follow one of the links to the table of contents (for some of the older ones, you have to follow two links), you can browse the chapters (or for some of the newer ones, you can also download the entire book. I might recommend that, if possible, since I ran into broken/incorrect links for some of the pages for 2009.)
Here are examples of some of the information available (PDF files):
DIMENSIONAL DATA 2009 RANGER SUPERCAB 4X2 / 4X4
2005 RANGER AXLE/TIRE/VEHICLE HEIGHT DATA
2001 RANGER MODEL LINEUP
Hope someone finds something useful to them. Have fun!