I am finishing up my 440 stroker build and ready to put the head gaskets on. I am .030 over bore with Cometic 4.350 (.030 over) bore diameter gasket. I have a very slight overhang into the cylinder on the block and into the combustion chamber on the head. Very slight, like maybe .002". I have built several motors over the years and have always used standard gaskets that had more diameter than the bore. But I needed the Cometic and figured I would get the exact bore diameter, because I could. Does anyone have experience with this?