Hmm...
Germans use often front oil coolers, handmade aluminum versions, thick and rough, no problems with flying stones on normal roads, even on dusty roads no probs. If you want to build it with such air scoops, do it, for myself it's too much Porsche, the only thing I would do is, to keep the rear of the cooler, wheelside, a bit shutted through mud and dust, that can plug the cooling surface!
Btw, the 5-blade fans work as efficient than a 12 or 11 blade fan. There is a university diploma existing about the airflow with Porsche fans of all kinds!
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