The problem with takeoffs is usually they want to sell the whole set. Newtakeoff has the chrome 2010 ones 2005 2006 2007 2008 2009 2010 OE Chrome 18" 5 spoke OEM wheels | NewTakeOff
I guess you can always call. Usually the best way is to find vehicles involved in accidents. Depending on the accident, a car will usually have 1-3 wheels. It's either a great deal or they try to soak you since they know how much Ford wants.