It is not a v-mount IC. That is a stock mount set-up so it suffers from heat soak when at rest. Even a vented hood won't help that.
I plan to convert to v-mount when I change to a Mazdaspeed GTC nose and hood. V-mount works well without a vented hood but it won't hurt. The most efficient v-mount will have a duct from the IC core face to the hood vent.
Jack
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