Can't seem to find the factory head gasket compressed thickness on a 360 Magnum...

I've been looking at aftermarket head gaskets @ 38 thousandths, are there ones out the less than
00.38 ?

If I can find some thin ones, ( no $$$ Cometic) that will be thin enough to make the job worthwhile, I'll go for it.

right Now I'm thinking that there won't be enough raise in CR to make it worth it