[dcdoug]

Not sure about the hex nut. Some sort of plug? It is outside the pan rail. The "crater" is the bolt hole. The "cratered" piece of it is mostly near the surface and the hole is normal further down. It looks like it is really large and blown out in this photo, but you still can't stick a 1/4 bit down the center of it, so there is still some bolt left along the sides. So when drilled out, it should clean up reasonably well. As mentioned before, the damage on the sides came from getting the extractor out, but isn't that deep. The out-of-round pieces along the sides should fill reasonable well with either epoxy if I can do the Permatex solution or silicone if I end up with the TermSert.