And you wouldn't be wrong. The GTR rolling off the factory is only at like 40% max power (my opinion/Guesstimate) - The GTR's were built to be modified - Nissan themselves said this on a Doco I was watching. These cars stock are very close to the Lambo Aventador which sells for $1,000,000 AUD.
Nsimo Williams who has been in works with Nismo to produce the R35 GTR N1 also admitted that there is more room for power. Also the 918 is a 800k car - it may be quick. But I don't think Nissan/Nismo tried to contend with the 918 Porsche. I think that is where the R36 will be heading - "be better then the 918, no acceptations" I think is going to be passed to the R36 creators.
Crazy cars - gives me cold chills thinking about the it.