I got a brand new Focus RS short motor from Ford to do a ZVH conversion. It was badged as a Duratec although it is a Zetec!
I ditched the std con rods but kept the crank and pistons. I had to cut a huge hole in the side to fit the Escort water pump.
I am running with 8.8:1 CR but have found that the std Mhale pistons melt at 26psi of boost.
S.