Well, ****. I got a different answer when I called. I think the guy must have been confused, because he said, and I asked him to verify, that EQ moved the oil supply hole in the head, and that with the 5622 gaskets you could have an oil leak.
I dont see how that's possible, but I'm going to see if I have a spare felpro around to check out cooling and oil supply hole location.
I specifically asked if that was for a magnum, because the EQ heads were magnum replacements, and he said no.