Hi Tatey
I would have answerd a bit earlier but I sort of had a power nap
Almost certain that you will be able to use the CVH flywheel, on the downside you will need to fit a trigger wheel on the front crank pulley because the CVH flywheel is not drilled for a crank sensor
You may be lucky & find the the front pulley from the CVH fits on the Zetec crankshaft !! ( CVH pulley has trigger wheel )
The CVH sump will fit to the Zetec engine, might save you the hassle of altering the Zetec's alloy one
Looked at a fair few engine installs at Stoneleigh yesterday .... Qute a few had the engine forward enough to use the Zetec's thermostat housing, as is.