I think Cometic do MLS gaskets around .080
Copper head gaskets are often custom made by water jet / plasma cutters..
So if you still want copper ?? Try these local guys first..
I got a set cut for a Ford V8 .. They have worked fine.. The heads are O ringed with
sealing compound .. No water leaks etc.. They used std gasket as temp plate..
Cometic gaskets are Sooo much less hassle to assemble...