It's a tricky business, that "not for profit" clause. You can take the original work and change it beyond the point that it is reasonably unrecognizable from the original. Or you can take copyrighted material and use it in an "educational" way, and even then must not use the entire copyrighted work. You can use copyrighted materials for political or "free speech" reasons, such as political satire. There are a lot of minefields to navigate, so a good catchall is "No, it's illegal, mostly." A good way to do it is to just import the AOM models into Max or Blender and just use them as a basis for your own models. That would work. And then use the textures as a good guide for your own textures.