looks very good and bet it goes like stink but i dont believe thats the black top zetec (and no its not because its painted blue).

it looks like the early generation zetec engine also known as zeta and badged as DOHC which yours is badged as unless you've put an old cam cover on?!

is that the original engine that came with the car? knowing this will confirm or disprove my theory.

top job mate, bet its fun to drive