New member---Help

Hi everyone.
I bought a Jimny SOHC a few weeks ago on a whim. Well it was cheap as the bloke was having head troubles.
Well I took the head off, checked it over, had a machine shop have a quick look at it and put it back together as I thought it may have just been a poor repair (he was getting water in the oil) following a head gasket job. I then put a cooling system pressure tester on it before final assy and found a hissing noise coming from what seemed to be a core plug on the head. I thought I'd give it a tap back down and now the plug has gone inside of the head. :ohmy: AND just to add insult to injury I've noticed that the head is cracked right the way across the core plug hole from one valve stem to another ( I hope that makes sense).
I hope it's not too forward of me being my first post, but does anybody have a head they want to sell? I'm supposed to be going to Scotland in two weeks and wanted to take the Jimny.
I also need some rear seats? :whistle:
Thanks in advance

Try ebay should get a guaranty if there are any