Engine mount - you'll either need to get a converted one or convert yours.
Fuel tank with pump - unless you run two fuel pumps and a swirl pot
Been told if you run a 2.0, you need to get a 1.8 sump and pick up etc
Pats - I'm not totally sure but a lot of people get an ecu etc Orr pats (think ones called desk?)
Not sure if you have to change the water pump as it might spin a different way?
Flywheel I've heard gets changed..

Unless you found an EFi escort and pulled the injection system and wiring off, put it on the zetec and away you basically go (just changing the mechanicals is then needed)

Carbs - need a set of carbs, inlet manifold, pump, regulator, edis bits and bobs which yours already has. Mount, change a few bits and away you go.