Id say your best bet is to have a look for a fiesta si thats failed its mot and is going cheep as that will have pretty much everything you need as they had a zetec engine in as standard so you'd have the engine mount,wireing loom and sump/oil pick up you need to put on the 2.0l to get it working as it should plus all the little clips,screws and brackets you always forget you need. You would steel need all the injectors and ecu from the 2.0l aswell as it wont run properly on the 1.6 stuff.