Alternator Replacement

[DailyBlown]

Unfortunately, my truck broke down today. The ABS light came on, the turn signals went from flashing fast to not working at all, and the battery light came on. Also, it made the dreaded clicking noise when attempting to start. Thus, I am assuming it is time for a new alternator. However, when I run my VIN number on the pats.ford.com site, it lists several models.

Does anyone know the correct alternator for a 2004 Ford Lightning?

Part #: NGL7791N (10346) or Part #: GL8728RM (10346)

 

[DailyBlown]

I tried manually searching instead of using the VIN and it came up with the following:

Part #: NGL8251N (10346)