Even with a tune, meth and nitrous the fan has been more than sufficient. If I recall correctly I choose that particular fan because it was very slim so it left space to work on from of engine. I was concerned it was enough at the time but that has not been a problem.

Sounds like we have some of the same background. I raced Corvettes for a few years, club racing. All were big blocks and one was an L88. Overkill was standard operating procedure so I understand your reasoning.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas