Vintage 273/318 head gaskets

I’ve recently used a Mopar Performance gasket that I believe is the Mr. Gasket pictured, just in Mopar packaging. It took a retorque to stop the coolant seepage, but still going strong on a heavy duty 360. I really like the fire rings on these NOS gaskets though. I’ve got a set of LA 318 4 barrel/360 iron heads that have been milled enough that the largest chamber diameter is around 3.98. I’m going to give these a whirl to see how they do in a 10.5:1 application.