Well, here is one for sale on ebay:
http://cgi.ebay.com/ebaymotors/1947...QQitemZ4586229446QQrdZ1QQsspagenameZWDVW

Hope that link works, unlike the lock for sale! I might add, that was quite a bit of good luck for you to find the lock in the glove box. The ignition key should fit it if it is the original that came with the truck. Also, a friend of mine bought one on ebay for $250, he REALLY wanted it.