You know I keep thinking that in my head and I am sure many others are too, but there is no way they can compete if they stick to NA power for a V6 unless Honda is able to extract 140/150 hp per liter, which is not realistic IMO. 3.8 liters like the GT3 for a V6 is too large and not Honda's style.
I would be quite satisfied with a very rev happy turbo V6 that is reliable and built like the GTR to handle more power than stock (which is a typical JDM thing anyways). So 8,500 or 9,000 redline with turbo, I would be thoroughly satisfied with that. If you are going to turbo, it has to rev pass 8K still Honda! This is why I'm excited to see the specs for the new turbo Civic Type R. I think it will redline at 8K if not ~8.5k.