1991 Spirit R/T. Trying to change the crank sensor. Of course it had to break off in the bell housing when I tried to extract it. Been trying to drill the magnetic piece for over an hour so I could try and use an extraction bit, but can't even put a dent in the metal. I'm using cobalt bits that are supposed to be for hard metal, and won't even dent it. I hate the thought of the tranny having to come out for a GD sensor, but I'm out of ideas...there is nothing to grab on to try and pull the sensor out. So am I basically f'd?