The oil pan and possibly the gasket, the pump and timing cover, realigning the timing cover and sealing it again.
No thanks.
Not without every possible attempt at getting the bolt out in one piece first.
What's happened is, that bolt is married to the timing cover. All the way through what....2" of timing cover. It was assembled dry. It'll be a miracle if it comes out and if it does, there are three other bolts that go through the same way. That bad boy would be coming apart over here and that problem would be gettin fixed. I've never understood why people always want to look at the bare minimum to get something going, instead of fixing the entire issue to where it;ll never, ever happen again. But hay it's not mine.