By the way, Darton MID Sleeves are not easy to do correctly. Mark told me part of the process and I can say that it is tedious. They have to know what they are doing. Don't let just anyone sleeve your block. If you do go to someone else, if the headgasket blows, don't expect another machine shop to fix it. That motor build turns into a big old paper weight, coffee table, etc. I already know of one instance.
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