You may as well start arranging a solicitor. Either that or buy a plane ticket to the UK, stop on the way to his house at the sports store and buy a baseball bat, and go get your money back.
His story is blatant crap. I expect he got into debt with some dangerous people and decided to rip someone from far away off to save his own skin.
I'm amazed he didnt bolt a CVH scrapper head onto a shagged 1.6 Zetec block, do the ZVH thing and send it to you....if your gonna do it you may as well do it in style.
When you told me that he sold a block with forged pistons and Arrow rods for 1500 it was plainly obvious to me that something was not quite right.
Still - you live and learn. Always better to build trust slowly with these sort of things.