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Message: <blockquote data-quote="Burninrock24" data-source="post: 1133483" data-attributes="member: 18179">Things to look at: - Mating surface. Dents or chips where the gasket will go are a no no.- Rust on cam lobes. You can clean up some surface rust, but every spec of rust is literally parts of the cam lobe. So the more you sand a clean the lobes, the more you are altering your cam profile. - Check the combustion chambers. If there are any signs of chipping or anything there, bad news. - Check for evenness of the mating surface. Bring along a straight edge and run it across each side of the head the long way on each side of the combustion chambers, and then on each side of each chamber the shorter way. Then finally diagonally across the head. These heads have very little deck height tolerance, so machine shops can't shave down too much to correct for flaws. I strongly recommend the PI intake too. If your intake right now has an aluminum crossover, you can reuse that on the PI intake. There are some screws on the underside. You will have to use RTV in order to seal it to the PI intake though. It does save time and hassle in tapping a new hole for the other sensor. And lastly, do NOT buy dorman. OEM or nothing. Dorman intakes are NPI intakes with PI port id.</blockquote>