Remember when Naruto met up with sasuke and he told him that, "If we were to fight, we'd both die together" I feel like this time when Naruto fights sasuke they'll end up doing the rasengan and chidori thing at the end and up dying together laying on the ground besides each other. That way Naruto dies a hero, Sasuke dies has the villain and kakashi becomes hokage.. (obito told naruto to even become the 7th hokage) so, if naruto dies in his honor they'll carve his face on the mountain making him the 7th.