Eddy heads on 416 stroker question

Get the block cut to zero deck the pistons and then use the Felpro Performance 1008 head gasket which compresses to .039". The difference between the two heads is about building a quench combustion chamber engine vs a non quench engine. Its not the 2 cc difference in combustion chamber volume as much as it is the quench. I think you are gonna end up just under 10:1 compression. I had my eddies milled to 62cc after they were ported. The 63cc heads usually measure out a little higher in volume and once the combustion chambers are ported the volume increases. Returning and ordering the other heads is the way to go.