I just got the other side off, and to be more specific there's an
accessory bolt hole near the center of the head, radiator side, under
which is the perfect place to slide in an angle-tipped prybar. A few
sharp blows on the end of the prybar (deadblow helped here) and it
broke away very easily. It was definitely the quickest way to get em
off. Avoid prying in at the joint where the block, head, and intake
manifold meet however, as that was a thin joint where a prybar might
induce future leaks.