N/A and supercharged use the same alt that junk yard is full of crap. Only one that is different is the 3.1 alternator.
-Edit- Seems I am mistaken.
Pin 3 looks to be different.
GTP Alt
- Pin 1 - Stator
- Pin 2 - Lamp
- Pin 3 - Field Monitor
- Pin 4 - Sense +
GT Alt
- Pin 1 - Stator
- Pin 2 - Lamp
- Pin 3 - Ignition +
- Pin 4 - Sense