your need map sensors, different ECU, Fiesta turbo engine wiring loom for Ofab, differnet fuel relays the list goes on.

To be honest mate i think with the amount of time and work it will take a garage to modify it to EFi your better off getting it back and finding out exactly what needs to be done or risk a huge bill from the garage as its not an easy/quick thing to do even for a mechanic.