Thought it looked like the upper left corner of the manifold gasket, but not quite-the holes are too close together...may be the pony-to-block gasket, it has similar holes.
May be the right front corner of this one?
Yeah, I know,it's filthy-haven't got to cleaning stage yet...![]()
Good candidate, but my fragment 's holes aren't evenly spaced like that. I did make a new pony to housing gasket.