What my corner now looks like.
I then tried to remove the exhaust manifold studs from the good head. No dice. I ended up breaking both studs off at their welds. I then center-punched and attempted to drill out one of the studs. My carbide left-hand drill bit barely made a dent. I tried a right-hand drill bit as well with equally poor luck. Either all my bits are dull or this stud is seriously hardened. :-(
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