Pretty easy but different from other corsas. You need to pull all the wires that run to the ecu which is on the engine on the 1.2 16V back into the drivers footwell. The colors should match the ones found on the early corsas. The only other thing of note is that the fuel pump relay if behind the glovebox on these cars. Easiest way to deal with that is to run a new wire from the c20xe fuel pump relay directly to the fuel pump. Other than that you might want to remove the immobiliser pickup from the lock barrel and join the two blue red wires as this prevents the ecu from getting a speed signal. It will still run without one but may stall at junctions.