Using blocks from mods in a datapack structure?

Kind of a continuation from my previous question but it's really a separate topic.
Using my previous example of a wizard tower would it be possible to have a few of the Sourcestone Blocks from Ars Nouveau inside of the structure?
I already know from my limited experience that such blocks don't get saved into the NBT when I create and save structures in Creative Mode.
Another post placement Function  but to transform a designated placeholder block into the mod block?