So what happened was one of my plugs stripped out of the head when i was driving the other day. What would be the best way to go?? I'm confused on whether or not a heli-coil would hold up or if i would be better off buying new heads?? I talked w/ the local ford dealer and they said there would be no guarentee on putting the heli-coil in so if that doesnt work im pretty much screwed and still have to pay them the labor, which is leaning me to getting new heads. Also how much power would i get from new heads and how much work is that gonna be??