Steve and others wondering what will happen to your manifolds....The machine process will not damage, distort or scratch your valuable exhaust manifolds. They may get wet from the coolant used in a CNC Lathe, but that's all. Your manifolds will look exactly like the factory did it. I have seen this process done and you can't tell if it was done 30 years ago or today. Looks absolutley like GM did it. Your AIR tubes will screw in like original equipment in the exact same spot. CNC (Computer Numeric Control) drills in the exact same spot every time. Threads will be perfectly straight every time. What else can I tell you? Manifolds have to be shipped to me in NJ. Any questions on prices or technical info, please email me at
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