so yeah to summarize the nissan RB is setup resonably well to handle high temps
the main things are plenty of water, good oil and good amount of oil and basics 101
no need for aftermarket caps, different water pipes, cooling panels etc
these usually add zero benefit, and in a lot of cases make it worse than OEM stock
nissan would stress test the ass out of the OEM gear to ensure it is acceptable, so you shouldnt need cooling panels etc
i think on dezz's car we saw worse water temps with a cooling panel fitted on his GTST, so he took it off
likewise aftermarket radiator cap on bassjunky's car caused the radiator core to explode (sure 3 minute burnout) but a stock would have just blown and pissed water everywhere
so more often than not, dont need the "marketing mods" that you see
80deg is ideal watere temp and the ECU (at least the powerfc does in defaults) will always richen up a touch to get to 80deg and stay there