You lucky if those 5.4 plugs came out in one piece. That Ford 3 valve head has a well deserved place in hell along with a few other Ford things.I think there was a 5.4L f150 ford where you had to tilt/etc the engine for the rear plugs iirc. Per a guy I used to work with who had one anyways. I never owned one, but thought that was obscene for a domestic truck to require that.