Which spark plugs are the one piece design?
I think I've read every spark plug post so I should know this, but the only one I'm sure of is the Champion plug. If Motorcraft has redesigned their plug I'd like to stay with them, but I'm not sure. I'm getting closer to doing mine. My Lisle tool showed up yesterday, so now it's time to get the plugs and start running some seafoam through my gas. Hopefully I'll be one of the lucky ones and not have any break, but with my Lisle, it shouldn't matter that much. Thanks guys.