You forgot tranny too.
Zetec & Duratec have different bellhousing patterns.
Easiest, cheapest, most practical way to do it:
Sell your car, buy a car with a Duratec MTX setup.
Realistic way to do it:
Like he said.
Strengthen your Zetec and Turbo that bad boy!!!
You don't say if your's is ATX or MTX. If ATX you'd need $2k in tranny work (Level 10) to support any serious added power...
Then your best bet is to just buy an MTX car... (I abhor automatics so I am a bit biased)