too hard to see, from that bottom picture it just looks like an indent in the head behind the extractor flange. if its not pissing water or oil I doubt its a hole in the head, generally if your going to get any cast material come apart (i.e hole in head) you'll get a crack in the high stress areas of the cylinder head.
From what i can tell from the pics just looks like abit of bent or twisted metal?
As i said just going by the pics it's hard to tell.
When i was in the market looking for a vl, i found a few rb20e engines that had the exact look to them, it just looked like it had been hit really hard and the metal it's self was abit err ****ed? lol
But yeah i agree if its not pissing anything out of the holes it should be ok?