Spark plugs hmm

[knucksfirst]

This is almost like picking a detergent theres so many types and part numbers its insane. I am only considering the motorcraft spark plugs but theres a few in debating over. Theres the nickel and platinum etc etc. What is the best to go with? Im looking at this site and its showing these part numbers. MOTORCRAFT Part # SP500 {#AGSF22FMF6} Finewire Platinum
Plug : Finewire

MOTORCRAFT Part # SP400 Nickel


heres the site: http://www.rockauto.com/catalog/raframecatalog.php

 

[shane96ranger]

This is almost like picking a detergent theres so many types and part numbers its insane. I am only considering the motorcraft spark plugs but theres a few in debating over. Theres the nickel and platinum etc etc. What is the best to go with? Im looking at this site and its showing these part numbers. MOTORCRAFT Part # SP500 {#AGSF22FMF6} Finewire Platinum
Plug : Finewire

MOTORCRAFT Part # SP400 Nickel


heres the site: http://www.rockauto.com/catalog/raframecatalog.php

I just put the Finewire Platinum SP486's in mine, and they are a lot better than the Autolite Platinums I had in there.

EDIT: Weird.....I wonder why 96 and 97 shows a different plug?