DarylJ

If you haven't tried already, these things are great:
http://www.sjdiscounttools.com/lis19250.html

I got one of the bolts around the water neck (through the head to the block) out of my block with only a few threads showing.

potent951turbo

+1, this is exactly what I was talking about. If one of them is small enough to bite into the nub you have left it should work.

cjeckert

Not to offend by a engineer put that bolt in that place for a reason, i would suspect that point is important.

DarylJ

So far I've found that when I try to "outsmart" what the engineers did on these cars, I'm often sorry for trying to do so.

A trained monkey could work on these things if you could teach it to read the factory service manual.