I would recommend having the head repaired because sending a cylinder overseas except by sea mail is extremely expensive. I received an exhaust system from Classic Alfa and the shipping cost was over $300.
Certainly my first thought but at present the shop see attempting that as a last resort and not certain. Seems the head probably froze and has both a long crack on top and also between plugs 2/3. Carefully disguised when purchased on the net. Shame.... Flat to 1 thou and unskimmed; bad luck
I have the head but I`m located in Canada.
If you`re interested I can dig them out and send you pictures.
One of them has cam caps and the other one doesn`t (which will be cheaper of course)
Keep me posted