I was checkin' out Mustang parts places online.
Mustangs Unlimited has a "tech" area.
This pertains to Fords obviously LOL not sure about others.

It says this:

Throttle Position Sensor Adjustment (Green and Black Wires)
To maintain optimum performance of your 5.0 L check the setting of the throttle position (located on the top of the throttle body). Accurate adjustment will provide smooth idle and good acceleration. Using a digital volt meter or a multi-meter with the ignition key in the "on" position; but with the engine off, voltage should read between .997-999; 1.1 to 1.25 for supercharged cars. Adjust (elongate the slots if necessary) the sensor to obtain proper setting by loosening the mounting screws and moving the sensor side to side.

This is the first time I've seen the N/A and SC cars to be set different.
Does anyone know the reason?

Thanks, KO