hello peeps ive got a series 2 rst which im converting to efi, i have a gd idea wot im doin with it but have heard a few dif storys now an its got me confused

. Is dar any1 out there that has carried out the conversion or no's how.
i have an xr3i cab sittin nxt to it as a donner car so have a wiring loom, manifold ect, ect i no i will need a crankshaft sensor an im pritty sure im gona need to buy a fiesta turbo ecu but am unsure??, is dar anything that i need that i poss dont have??
any help will be much apreiciated