Slant 6 cylinder Aluminium engine

Charlie, I was under the impression that the standard head gasket would work with the aluminum head. Is that incorrect?

I have not tried it, but I would say it would not work. There are quite a few differences in the head gaskets. The stock iron head can be made to work with the aluminum engine. That might be what you are thinking. Just have to make sure the head has the combustion chambers well centered over the cylinders.