Varn,
From my cursory look online it looks like Ford was doing buybacks last year. I don't know if they still are. I would take it in for the check and if you get lucky they might give you a rental for a few months before buying it from you at more than it is worth.
Not much sense in driving a van which has the potential for a bad rear axle and a front end. Everything I have read says it is a purchase offer not tied to buying a Ford.
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