The immediate point that sprung to my mind when the Zetec turbo was mentioned, was:

Where is this chap supposed to find the extra cc in the cumbustion chamber to be able to run a safe turbo setup on his (probably) standard S2 management?

Sure, a Zetec turbo is a good engine. But this guy is on a budget - he probably does not want to buy new pistons and rods. So his best option is a 1.8ZVH, proven to run and produce good power with just a CVH head, without touching the pistons.

All he wants to do is have a bash at building a ZVH - without complicating things the 1.8 is the easiest and cheapest to do.

So lets all calm down - everyone who took the time to post about engines in some form or another has made some valid points, the rest of the people who have posted here really must have very tiny minds - still they made me laugh.