340 Magnum Piston/Head Clearance

Re measured with the gauge and they come out close to .040 out the deck which was surprising; thought they would only be .018 like factory. Will definitely have to be cut down if I want to use EQ magnum heads. I will go shopping for metal now to have a friend make me a piston vise so we can fly cut them on his mill. Then I should be cleared to use the .039 fel pro head gaskets.