Yes, I found 3 other sites that still seem to sell the flares, also found a site that sells a different fender with the flare already there.
http://www.aztrucks.com/allproduct.asp?Category=Fender_Trim
http://www.amazon.com/gp/offer-listing/B0040MYITI/ref=dp_olp_0?ie=UTF8&redirect=true&condition=all
http://www.andysautosport.com/ford/2001_2006_explorer_sport_trac/exterior/fenders/fender_flares/bushwacker/
http://www.hannemannfiberglass.com/custom.asp?id=457567&page=103