Try TAP Recycling. They're in SoCal (Rancho Cordova, CA), but are willing to ship.
http://www.taprecycling.com/
916-631-7100 or (800) 765-7100
They specialize in Toyota Parts (basically a junk yard that is toyota specific). I noticed they have a few 4th Gen 'Runners there. They should be able to help you.