Here are some sources for 600 series Fullers

http://www.plunkstruck.com/

http://www.plunks2.com/

http://www.geigertruck.com/

http://www.tnttruck.com/index.php?action=page_display&PageID=5

http://www.timjordanstruck.com/

I have done business with all of these salvage dealers. They are reputable and are experienced in shipping