you must be doing drugs...I asked him what gasket he used with his heads and enigne. He has a MAGNUM BLOCK AND MAGNUM HEADS... I HAVE A LA BLOCK AND MAGNUM HEADS. I did not find a head gasket that was magnum based that was .039-.040. The one he has would work and I was going to get it or the better version which would be the 519sd, but they are too thick. So get off my ***!:stfu: