So, apparently I made the silly mistake of buying plugs for the E7 application, but the P heads use different plugs.
I'm told that for best performance and to not confuse the computer, I should use copper plugs. I'm looking around and it doesn't look like Motorcraft even makes copper plugs for this application. There is nickel, but not copper.
So, what have you found that works best with P heads? I've always stuck to Motorcraft for reasonably good quality (even if their products probably are just made by the highest bidder) and to keep things easy and consistent. Should I do that here? Is nickel as good as copper? What other brands do you like?
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