I called Mr. Gasket tech years ago due to seeing a difference in their BB Mopar beaded steel head gaskets from one package to another, I was told that they had stop having them made here in the U.S. and where getting them from China
That was some years ago when you could buy them from Fel Pro, Victor and a bunch of other U.S. gasket companies.
I'm not sure who makes the Mopar brand head gaskets now
I have several different sets in stock, some of the shiny ones and some of the painted ones.
I haven't tried using a steel head gasket on a motor with aluminum heads yet