what do you need to know? if your just on about squeezing it in you will have to modify the engine mount, use 1800 zetec waterpump and oil pump probaly (clearance for oil pump, and so water pump meets pipe, hose will need modding as zetec water pump is i think 42mm and cvh is 32) as for gearbox if your using a bc box it will bolt up to the zetec providing you use a flywheel that works, but you could do with making some cover plates to go between block and box to cover the gaps left. i dont know if the inlet works but im guessing so as a 2.0l focus one is common on 2.0 fiesta conversions.

hope this helps