The old head I replaced was cracked between the valve seats on 4 cylinders, but never leaked antifreeze from around the head. I doubt the block isn't true, but I won't rule it out. The place I bought it from (Old Car Parts) guaranteed the head was magnafluxed and crack-free. The cylinder head shop I took it to locally said he checked it for being level, and it checked out good, so he didn't surface it, although I gave him the go ahead to do so if need be.
While I would like very much to do it right, I'm also on a deadline. The truck has to be road ready by mid-May. Seems like quite a while, but I'm in college and usually only able to go home and work on it every other weekend, unfortunately. That adds up to only about 20 actual working days. I'm gone right now, but hopefully I can check it out and see if it's leaked anymore when I'm home again.