Both the APP5364 and APP5344 will work.
The difference is in the overall length of the plug.
The APP5364 is slightly longer, I think, by 1/16".

Motorcraft and Autolite are basicly the same plug, so get whatever is cheaper.

Stay away from Champion and Bosch.

Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST Pre98 Zetec - Some Mods