I did some research for my brother some months back. Mitsu 4M40 (I think 2.8l turbo ex Triton) can be used. UK crowd fabricates a conversion kit - but it's not cheap. Engine's same world over, including UK! I haven't got the info anymore, but I think the UK firm had the word "Anglia" in it.
Others may have seen this website. I'll check it out tomorrow.
It depends on how much you've got to spend, but you'll not get much for little!

