You could put a scoop just like the carburetor scoop on the bottom front of the Zero's cowling, but invert it to the top of the radiator surround. The rounded contours of both are close.
Or take the oil cooler scoop design from the bottom rear of the Zero cowling, put it on the hood.
Or take the oil cooler scoop design from the bottom rear of the Zero cowling, put it on the hood.