Hit a snag I should have caught. There's a small lip on the Dakota "hub" (formally rotor) that positions the Mopar wheel. It's larger than the opening on Ford wheels so I'll either take it back to the machinist to mill off ($60 an hour) or do it myself with a Dremel. That lip prevents the hub from fully seating in my Ford sized wheels.

Other thing of note. I've had in my stash a set of cruddy 2002 Toyota Tundra four pot SW13E calipers. Out of curiosity, I tried them on my setup. They fit GREAT! That's a problem.. They fit excellent and are inexpensive. However, they weigh about 14 lbs and are made of cast iron. The Lexus and Dakota calipers both weigh in at 7 lbs. The Tundra calipers are a snap to fabricate a bracket for but the Lexus calipers will take some work. Now I'm wondering if I should just push the "Easy Button".