Having 2 93 rx7....I can say no. Even with the SC you will not exp the same heat. In an rx7 at a light , one could feel the heat in the car and outside of the car. I blew apex twice under normal driving...Until I added downpipe, bigger radiator and updated intercooler.....
But back to OP---My TEMP gauge stays the same on both NSX I have. Rx7 you had to watch that gauge as much as you did the rpm gauge
P.S. You can mod the rx7 and get great numbers for a low price. Dont expect the same with the X
Well, it really depends on your setup. Build it right and build it safe and you shouldn't have any trouble. In contrast, try to throw twin turbos into your NSX without good planning/engineering and you'll see that thing on the lift more than on the road.
In stock form, I've yet to meet someone overheat an NSX.