more innovative solutions...
1. If I drill the head off (its too thin for an EZ-out) and then Raise the engine with a Hoist and remove the mount, will enough of the shank be left to get a grip on with vise grips? Please don't laugh.
2.Fill the allen hole with heavy duty Epoxy Putty and then hammer a 10mm Metric socket in place and let the thing harden overnight? Please dont laugh