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keyless entry advice please

Hi all, my daughter has a 2004 micra sve 1.4 petrol with keyless entry...the car belonged to her grandad and has lots of sentimental value to her.
Anyway in the last 4 years the car has had 2 ecu kits fitted due to the key loosing its connection with the car and cutting out and just not even tryng to start again
Would anyone know if I could use a normal key ecu kit on the keyless wiring loom ?..would it all plug in and work or is it more complicated.
Any help would be very much apriciated
Thanks all