5.9L Magnum questions
I would struggle with the idea of using that head. But I would be interested in hearing about others' experiences on this.
Given that they are almost always cracked you can normally find them pretty cheap, so you might want to check the local classifieds / Marketplace and see if you can find another pair. Out of 4 heads hopefully you would be able to find 2 you're comfortable with.
For reference, my heads had the types of cracks shown in the pic below. I didn't even see most of the cracks until I started lapping the valves: