450HP in a 3.6L is equal to 125HP/L. Which is about the same as the S2000 engine. I think it's actually possible to do it since Honda is so good at squeezing HP out of NA engine already. 125HP/L is a walk in the park for them. We'll just have to wait and see though. To me, it just seem more logical for Honda to do 125HP/L NA than to go F/I. Since the GT-R has been stated 480+HP, I think Honda's 450HP is pretty comparable. Much better than the last estimate of 300HP.