To be honest I never picked up on the fact that this was in fact a "mod".. but I'm sure with some engines and configurations the cooling benefit could be realistic. Thinking back on cars I've seen, I now realize I've seen some (and you're right, most likely in the civic-world) that have done this exact thing.
Good luck with it, it will be interesting to see how the 370Z market reacts to this type of product available. I'm sure you'll get the feedback you're looking for.
If they do be sure to do your part and sponsor the forum..