I think you're contradicting yourself a little here. First you're going off saying how Nissan needs a bigger engine to achieve the same level of power, but then you brought the in the comparison of the NSX and the GT-R. Last I checked, the GT-R has a 2.6L I6 engine. That's much smaller than the 3.2L from the NSX. Also, I don't get your argument about turbo. What's wrong w/ turbo? Nissan never use a big block in its sport car. It's most powerful engine still comes from a 2.6L I6. Then the 3.0L V6 from the 300ZX... Last but not least, their famous SR20DET. If I'm not mistaken, those are pretty small engine.

What do you mean about efficiency? If you start say turbo is old school and NA is much better than turbo, then you should ask yourself why Porsche use turbo for their 911 turbo, Mercedes and their supercharged V8, Toyota w/ their Supra, and Nissan w/ their GT-R. There's only two way to get more power....1) bigger engine and 2) forced induction. F/I is the answer to the statement of there's no replacement for displacement. A built RB26DETT can be able to handle over 1000HP. Almost 500HP/L is nothing to discard as old school to me. If you can say turbo is cheating... then what do you call VTEC? VTEC is another way to get more air into the engine... adding more fuel and you'll get a stronger combustion = more HP. Same w/ turbo.... forced more air in + more gas = more HP. Two technique reaching the same goal.

Your argument says larger engines weigh more.... but the NSX has a larger engine than the GT-R... yet the NSX is lighter than the GT-R. However, both can handle its own. How can you explain that? Also, your arguement about JGTC doesn't really explain anything about the cars. If anything, it shows that the driver of the NSX-R is better of the bunch. Those car are so close in performance that the driver is the one that set them apart.

By the way, the SR16VE N1 has 197hp and the SR16VE has 176hp and the SR20VE has 205hp now. Just wanna straight up some info.