Manhart Racing makes a nice looking vented hood:
http://www.shop.manhart-performance.de/Manhart-Hood_3
Item #MH2F1211110
I'm considering it for mine.. not sure.
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2014 BMW M6: Competition/Executive/Drivers assist+/Carbon Ceramic brakes, B&O Sound, Nightvision, Escort 9500Ci w/ laser shifters, AMS Catless DP's, Akrapovic Evolution exhaust, Dinan Stage 2 ECU Piggyback, Dinan Intakes, Full Vorsteiner accents, M Performance steering wheel, carbon fiber shifter, Awron vent gauge.
2017 BMW X6M: In the process of modding