If it's a 1.3 you'd have to use the bits of something like a Mk4 Fiesta 1300 or Ka which both have multi-point EFi.

You'd need quite a few bits like a new inlet manifold, ECU and sensors. They'd probably be quite a bit of wiring involved as well. TBH I'm not sure what you'd get out of it because an EFi 1.3 is only 60bhp IIRC.