I love the build. Really impressive! Are you running E85? Meth? Stock LSA heads? What's your peak boost?
I daily drive a 3-pedal CTS-V with a stock longbock LSA @ 702rwhp, and I might encourage you to consider a larger pulley than the 2.45"
The 2.45" will work great on the street, autoX, and speed stops, but you're gonna be fighting IAT2s all day long spinning the blower that fast on the track.
You're correct that an ice tank will not help on the track either, other than the first 2-3 laps. The reality is that the brick in the lid just doesn't have the ability to shed as much heat as the blower generates with that small of a pulley for the typical road course WOT profile.
Is your pulley interchangeable? IE could you run a 2.45 for most events, then swap the pulley and tune for road course events? If that's legal, that might be the hot ticket.
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