I'm in the process of buying an '05 SuperCrew Lariat with 95K miles on it. One condition of the purchase is that they do a tune-up, including replacing the spark plugs. They've agreed, possibly not knowing what they signed up for (it's at a Chevy dealership).

I want to make sure that the plugs they install won't have the same break-off issues that are so common with the 5.4s. I've heard that Ford has come out with a plug that corrects the problem, but I've searched the forum and haven't found a part number anywhere. Could someone please post it?

Thanks!