the first one, probably isnt worth much, the guy probably has like a grand in it. the other one though belongs to one of the members of ZZ top, and is worth a whole lot of money im sure because of that.
but if your really interested in rat rods, go check out the KillBillet.com forums. Those guys are a lot of help on where to find. and theres a lot of good information and defination of what a rat rod is.