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Message: [QUOTE="TooManyToys, post: 1559849, member: 30841"] 6.0 blocks are so plentiful in the US, Hartwig; I'd just get another. No, I'm afraid I have to disagree. It depends on the competency of the shop and the equipment they want to invest in. The CNC equipment for the last decade can easily correct for something like this. RMC is one of the CNC manufacturers that sell better equipment. Rottler, also. But again, it depends if the shop wants to use the engine block Datum and the crank bore to reference the cylinders and decks. And if they have the blueprint specs for the engine. To me, that's the most important thing. But, again, I'm just a home rebuilder of one 6.0 engine, so I'm coming from the experience of long ago and other engines. Through my YT travels, I could point you to some equipment videos from Rottler. Unfortunately, I've not looked at enough sites to show a direct video that shows the setup. This video is typical of their CNC videos from what I've seen, indicating off the existing oil pan deck, bore, and head deck, then using a boring bar and flycutter. This method would straighten the decks and bores to the crank centerline since they are mounting off a crank bar. It's good but not ideal as it would not locate the ideal cylinder bores. [MEDIA=youtube]z6VCaiWh27k[/MEDIA] This is one of my favorite small machining shops for videos. I've gone through many of his videos, and from my experience of being in a shop about 50 years ago and shops I have used, he does it right. I won't post all the videos you could watch. But he is referencing off the Datum in the block (when available), crank bore, and everything else. And he has the blueprint information from the CNC supplier. [MEDIA=youtube]5jqcz5QRwHg[/MEDIA] [MEDIA=youtube]7avTX3BNmuA[/MEDIA] [MEDIA=youtube]2J1bh6T3XI0[/MEDIA] [MEDIA=youtube]pYc6gwtnrVg[/MEDIA] [/QUOTE]