Might be the old Patriot castings? Considering Jason bought Patriot, and Alabama Cylinder Head......I'd say that's a reasonable guesstimate.easy for you, your in the trade. I'm well aware everyone copies everyone. I haven't seen any promaxxx out in the wild myself for a SBF. bbc and sbc but not sbf. Just general experience with them, What casting there now selling in the three version they offer the head in. They changed the casting based on the stock photos I'm seeing from places selling them, hell those might even be the old patriot castings Marty had before promaxxx bought it, one is based off an afr head, even CHP site still shows it, the other on an edelbrock layout that looks like the unfinished castings in the picture I posted.
I saw a recent china casting that looks real close to the most recent afrs, same port layout, deck and chambers talking about a 185 and 210 as cast head but they only had the sample set.
And it's easy for you, too.
We are a family owned business that began in 2012 by purchasing the remnants of Patriot Performance and Alabama Cylinder Head Exchange.