Easy. You need a updated fuel pump, mk6 escort long driveshaft ( or custom mount on cvh block for 3 piece shafts) and you need the gearbox from a deisel mk4 or mk5 fiesta.

7 wires to get the loom in ( you keep the standard ecu and piggy back the new one ) also you'll need to chuck anolouge mk4 dash clocks in to get them working.