Need Wider Fanblades for 2006 GT

Have 18" x 8.5" wide fanblade wheels on 2006 GT and have mounted 255/45 Goodrich G Force KDW's, Have done complete suspension overhaul in anticipation of Vortech Supercharger install in a couple weeks. My problem is my rear tires aren't wide enough for my tastes and I would really like to go up to 285s. My wheels consequently need to be wider. I don't want to change my entire wheel package as I really like the stock look and don't want to deal with the expense. Question: does anybody carry or manufacture replica fanblades that are wider than the stock fanblades available from Ford?