Mopar P4532900 head info needed

PRH said
I’m not familiar enough with the various MP SB heads to know what that head is.
But as is the case with their other heads and intake manifolds, the number cast into the head is not the “part number”(the number in the catalog) for the head.

I assume you’re going to reflow it on your bench.

Edit- looking in my old MP catalog, based on appearance I’d say it’s the “aluminum magnum” head.
If it has 5/16” valve stems and 1.92/1.62 valves, and magnum intake mounting........it’s probably a P4876624.

I told him I can’t get into flowing them right now but for whatever good it would do I could look it over. After hearing what he paid for them I sure wish he would have called me first. It is for a magnum combo with I guess a hydraulic roller cam setup. He supposedly bought them from someone that bought them from Hughes.