warped intake

That crack is there because the curving pulled it there, not because of the amount of warp curve.
That probably also means the head surfaces are ok because the aluminum pulled away instead of curving the head surface.
That being the case, I would press fresh mixed JB weld into the crack and then knock the warped center back down and I'd bet 100 bucks it's fine.:D

The smile means I'm not actually betting 100 bucks, but that's how I would go about that repair.