That looks like a real bad overheat, and an HG is probably least of its problems.
valve-valve cracks are normal if a nickel won't fit edgewise.
Measure your piston stickup, and keep the tallest rods. some valves and precups might be good, but as non-turbo one and the cam...some have a tiny bit more lift.
Valve shims, you want a collection, as well as accessory brackets.
They say NA head , block, and ring metallurgy wasn't as good, wonder why?
I'm gonna guess the pump is good on this one.
What's the warp down the head? I think .006" is max, .004 crosswise.
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