What is the "HP" for? I don't have any trouble finding the FL-1A. I can't always find them in Motorcraft brand, though. (esp at AutoZone....I hate that place)
I don't know if it is different internally, but the metal case is much thicker, I guess for higher pressure oil pumps.
I want my stang to have the ford filter on it mainly for looks, kinda like the battery is motorcraft as well.
Seen to many nice cars ruined by using the wrong battery or oil filter at car shows.
Yeah, and I'd have a hard time spending even $6 for an FL-1A!