Gen 3 or 4
Since this port is smaller and going into a larger head port I think you're ok to leave it. Is it ideal, no, but also not a huge deal. If it was the reverse and the cylinder head port was smaller creating a ledge that the air had to travel over, I would say major issue.
Since this port is smaller and going into a larger head port I think you're ok to leave it. Is it ideal, no, but also not a huge deal. If it was the reverse and the cylinder head port was smaller creating a ledge that the air had to travel over, I would say major issue.











