I'm attempting to remove the front diff-VC from an 87 syncro. 
Unfortunately, I discovered to my dismay that one of the front CV bolts had
a goobered head.  I've tried several removal techniques (vise grips, etc.)
to get this bolt out with no success.  Normally at this point I'd remove
the part and take it to a machine shop, but I don't see any way to get the
front diff out without removing this bolt.  Any advice is much appreciated.

Bill