i rst'd my old mk5 and it turn't out to be rather expensive!
you need to have the engine loom modified/extended, custom exhaust made up, cvh p/s setup if the car currently has p/s? fit an esc cos intank fuel pump, the list goes on, in the end i just bought another escort that had the work already done and just swopped it over, but even that cost me 2k for the car
as said, would be much easier/cheaper just to put a non turbo zetec in. alot less chance of thing's always going wrong, abit cheaper to insure, and alot less faffing about!