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Hello. Welcome to Just Answer. Please allow me to assist you. I have encountered this several times in our shop. Owners drove the vehicle overheated until it quit. Warped the head spo bad you could see the warpage. If the heads are severely warped, they cams will nto fit back where they ride. When this happens it is best to replace the heads, replacement (oversize) camshafts are, to my knowledge, not available, and, if they were, it would take a really, really good machinist to line bore the cam journals. Sorry to say it but this looks like you need to replace the cylinder heads. I would not fool with getting them resurfaces as the top end of the heads are far out of true.
Please confirm that you have received my input. If you have any questions, please feel free to ask. Thanks.