Welcome Don. If you're looking for an already complete truck your best bet will probably be tlc4x4.com. They are in Van Nuys and do very nice restorations. You'll pay through the freaking nose though, so brace yourself.
If you're looking for something to build up yourself, try to find the straightest body you can with the least rust. Small rust spots can be cut out and new metal welded in, but larger problems require replacement. Everything else can be sourced for parts (engine is common among many models including FJ40 and FJ60/62) but body parts for our aging swine are difficult to come by.
Good luck and let us know (with pics) when you find your first piggie!
Jeremy
Cypress, California