and the oil cooler vent...
only the 280zx's came with oil coolers.. and were not mounted along side the middle of the engine
Z's benefit from "vents/louvers" to expel the high pressure build up air at high speeds and allow the heat to RISE out of the hood.
The vents in your design act as "ram air" effect and actually jam more high pressure air under the hood. Although the air is cooler it will absorb some heat... but not efficiently.
AND the "induction" vent is way out of place.. if you notice the Z's air box is located on the front of the radiator support.. or the "passengers" side of the car. The induction vent is located too far back and on the wrong side of the engine compartment.