I think they will...just measure the bolt spacing on the Windstar to make sure. The width may be a bit wide. With the stock tires, though, I doubt it. Or at least it'd look really funny.
the windstar is on a taurus platform, which uses a funky metric bolt pattern, not the 4-1/2 on 5 like the trac. i could measure first.. the backspacing is prbably off, also... HTH