Clear and precise. Exactly what I'm after, thank you.
The reason for asking is because everyone's been telling me the block itself is good more than a 1000hp but never got around knowing what is the limit of the stock engine itself (this come to my mind when people go on about how the 2jz are capable of high hp without engine mods when comparing to rb26).
As you've mentioned, most owners of N1/NUR I know or read of would run their car stock to around 300-350rwkw (above 20psi) because thats what the whole stock car is capable of without really having the need of any supporting mods (e.g. clutch, fuel etc) but anything more you'll be looking at upgrading the fuel system at the very least.
And really to me, to mod the N1/NUR to the extend of forged internal or even turbo defeats the purpose of having that car (even for putting a/c on mine I've already got people telling me the same thing...). Anyway the factory oil cooler is a very nice to have and I'm sure there no real need in upgrading that too.