Thanks for the info guys! I was leaning towards Jasper too! :shock:
Not only do I need to replace the engine, but I have to figure out the underlying problem of why it overheated to begin with. I am told that it was idling at the dock while the previous owner was parking the truck, he walked back to find steam rising from the engine and before he could shut it down to investigate, it seized.
Obviously, it wasn't drawing any/enough water into the engine...maybe plugged risers/manifolds? I don't know....gonna have to wait for warmer weather to find out.