Maybe "ported" is a better word to use but it just didn't sound right to port an exhaust manifold. I grind out the outlet on the 360 magnum manifold. The 360 manifold is a very thick casting and has lots of material that can be removed to make it a 2 1/4" outlet. In fact all the manifolds I machine come out a little more than 2 1/4".
treblig
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