One warning : If you put the head on a figure you cannot redistribute the mesh, or the CR2 that includes the head. But I think the CR2 trick would work. Suggest you use the obj files in geometries rather than the exported ones. Exported ones tend to have problems with morphs. You may need to regroup the figure, as the geometries obj's tend to spray pieces around. It will be a real trick the first time, then easy, I think.