Here is mine:
I used the boxe's standard tube and took out the resonator.
Split it in two bits, used one to go under the radiator overflow tank and the other one with the bendy bit to come from the airbox itself.
Then, to make it all come together I used an old transmission boot. It works great and it has been on the car for 3000Km. No issues so far.
My GA16DE airbox was taken from a Primera with its tube.
I've just eliminated the resonator and placed as the Micra one. Resonator hole has been closed with a cap and an o'ring and sealed with silicone.