I've used the local pick 'n' pull junkyards and salvage yards to source cheap parts and keep mine on the road (much to "it's" chagrin!).
USAutoparts.net and RockAuto.com are also pretty good places to trawl for parts as well.
Coal Country Cruise... YOU MISSED IT!!! Pics here: http://www.focusfanatics.com/forum/showthread.php?t=296590&page=2