I have not been having any luck with old nos gaskets that have been sitting around for ageS . I was searching the internet to see if anyone is reproducing anything new and I came across those sce copper gasket. .. I remember seeing cometic gaskets from sce at a steep price in the past . this is the second time in the last month I had to replace the pass side head gasket on my commando engine. I should have had the head milled previously . MY BAD. . I replaced it with an old nos gasket and even the drv side is huffing white smoke now.