Find your fuel lines and fit them to the efi fuel rail , from the regulator its the return line.
As for the ecu its a matter of knowing your ignition lives earths , permanent lives and replicating it to the escort .The engine loom should run as usual like the Fiesta , just make sure you have all the relavent parts
Plenty of of people on here who will know the wires etc .
Oddkid creations and co wouldnt be a bad choice for more info sorry i cant be more in depth.