I had to pull the drain plug off a head to move it to the front since it was originally intended for the opposite side. Anyways, I had to drill through it and use an extractor to get that damn thing out, where can I find another one to shove it in the front of the head and was thread size is it? Thanks.

 

It's a 3/8-18 pipe plug for the temp sensor hole and ¼-18 for the front plugs.

 

Cool beans, after I fix this steam pipe I can throw it in the car tomorrow and fire it up. Just hope I can find a place in town that sells drain plugs.