w-2 heads info

I cant get the new pics to upload for some reason. I have a 340 dated 1970 but supposedly came out of a 72 demon. these heads came with the block along with a 340 crank and mopar aluminum high rise manifold part # p4532155. this engine will be built in the future so trying to gather all info I can. I have a built 360 with j heads that will go in the car first.