Out of my circle of friends and family, the ford f150 definitely have the most problems. Including my own 2.7 that had 3 leaking oil pans and ended up trading it in with a leaking driver side head gasket at 61k miles. Yep... Just outside the power train warranty with no help from ford.
Do you have a relationship with your Ford dealer? I guarantee I would get them to pay at least half of it, if not all of it.