We've just posted two new Ford installation guides on our website:
How to MegaSquirt your 4.6 Mustang or other modular motors
This one covers '96-'04 Mustangs, as well as having information that applies to Crown Victorias, Lightnings, and other vehicles that used the modular V8.
How to MegaSquirt your Ford Zetec
This engine covers the 2.0 Zetec found in many Focuses, Mondeos, Contours, and Escorts. Or if you're building a kit car and would rather not deal with zillions of OBD-II sensors, this gives you an alternative approach to engine management.