as great as he was, Minato is not so powerfull like the so6p and both dnt have the same seal techniques. so I am not sure, if its real what I said before, the appearance of the so6p wont be the same as the one of Kushina or Minato
We dont even know how much generations exist between the So6p and today, so how cuould they (tobi and kabuto) have found his dna?
second: the only jinjuriki who looked like the So6p when he took contrl of his tailed beast ist Naruto. All the oder didnt habe the slightest apparence of it.
So...