Can anyone tell me how or where i can get this done?

I had to get another ecu for a pug 106 and i have the key chip to go with it but i've now found out that i need to get the ignition barrel receiver paired with the ecu??

I have the chassis number and reg of the car the key and ecu came from it that helps??

Or would it be easier to just get another with all three as a matching set?