They are all over the place, but never when you have the funds. I wanted a '56 for years and years. I kept missing them by however long (once by 20 minutes
). Finally I found this site with the 48-60 group of guys. I let them know what I was looking for and one of them found me one. It was in severville, TN though. That was a mere 620 mile drive each way.
I am now the proud owner of a '56 ford f-100. Its no summer project for sure. It will be years and years before its completely restored. Its a blast to drive for now.
I don't know if it will allow me to link it here, but here are some pics of when I got it last November.
http://home.centurytel.net/brian_b/56/index2.htm