Inlet manifold, injector rail, and sensors maybe yes (dont know for 100% unless I looked at them), loom and ECU no, running OFAB or OFAC limit's you to off the shelf chips and not making the most out of your build.
Regards the ZVH.. IMO it is a waste of time, your taking the bad bits from a CVH and throwing away the best bits of the Zetec! lol
In addition to that you'll need a very expensive head and a big turbo to make any decent usable power.
My advice would be build either a good CVH, or better still a Zetec turbo and run some form of standalone mangement, this will see by far the best results for both power and reliability.