Guys thanks again for all the advice. I will definitely look into the locals here in San Antonio this evening.
I had some time today so I thought I would try and pull the head to see if I could weld something onto the broken stud and get it out before pulling the engine. Unfortunately the stud broke off pretty flush. Also the rest of the engine looks like its in pretty bad shape. The front cylinder doesn't look too bad but the other 3 had between 1/8 and a 1/4 inch of rust and crud in there...probably from the cylinder walls when my dad was turning it over. The plugs were pretty rusted and corroded as well. The head was pretty rough too. Here are a couple of shots for your enjoyment/disgust.
Thanks again. I will see what locals I can find. Isnt it wonderful to live in a time where communication and the sharing of information isn't limited to the local garage! Its amazing.