That motorcraft thing looks interesting... Never seen it before.

honestly the Ford shop manual I got on CD off Ebay is pretty lame, though clearly official. Could be much more detailed...

 

I paid the big bucks for the books from Helm. They are expensive, but IMO, worth it. Haynes and Chiltons, better than nothing but compared to the official manuals, forget it.

There are actually four books to buy in all: Volumes 1 and2 of the Mustang Workshop Manual, the Wiring Diagram book and the Powertrain-Emissions Control book.