Unknown Commando...

Not likely there would be anything fatally wrong with the block, if it turns over. But there's no knowing how much work it would involve, either. Bores? Crank? Those would be the big issues. Heads would need doing no matter what. Those head castings are pretty notorious for cracking at the corner (near either #1 or #8). Maybe you could knock out a lower freeze plug on the side of the block and see how much crud is in there, as a general indicator of condition. If there is oil in the sump that is also very diagnostic.