A bit more on expected temperatures:
The SHO Times author used Fred Puhn's calculations and graphed the expected temperatures for factory rotors making one stop. The smallest Ford SHO rotor was from 1989.

Stock 1989 Ford SHO
From 60 mph the front rotors would experience about 220 F degree rise in temperature.
(That matches surprisingly well with his real life test of four 60 mph stops cited in the first post.)

From 120 mph, the 10.1" rotors calculate to increase around 750 F degrees.

Using the same method with a
3400 lb A-body with factory 4 piston calipers and 10x1.75 rear drums:
60 mph stop calculates to 107 F degrees
and even if the rear drums did nothing, the disks would only increase 147 F degrees.

From 120 mph the temperature rise will be 430 F degrees
and if the drums did nothing it still only calculates to 590 degrees.

I thought this comparison would be helpful in clarifying what temperature ranges our brakes will see typical street driving, as well as a single high speed stop.

The reason for calculating both with and without rear brake contribution is because its not known which way the SHO calculations were done. The SHO is a front engined, front wheel drive car so the rear brakes remove less energy than our better balanced RWD cars.