Hmmm...."properly ported." Maybe a loaded question for some. Easier for me in my case as it was not ported. Intake gaskets set against it showed the runners to be central to the port openings so I thought let's first see what it looks like on the engine. It was set in place on the engine and I was amazed to find that the ports aligned just about perfectly to the ports in the head. That manifold is open and tall enough to see down each runner and I found there to be NO need to touch it. Yes, I was surprised by this as I wanted to start making alum chips so I could claim I improved it. But that would have done nothing in this case (and maybe I would have hurt it!). Now I know others have said/shown that cleaning up the runner entries and the roof radius would also help it. This was not done but certainly could still be done. I dunno - I seemed to have gotten a good casting for some reason.