^ I meant I have the Stillen brake duct kit already, which has a single 2-inch outlet on the hub adapter. Even then not all of the pipe's diameter makes it to the inside part of the rotor. It seems tricky to fit more airflow into there; there's certainly not room to cut another hole on Stillen's plate. Certainly 2x2" sounds easier than 1x3", though. Part of their trick could also be that they're using a larger rotor hat than I am, by the looks of it, which would allow more room for outlets to get airflow to the inner edge of the rotor.
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