I think you're misunderstanding. The Naruto [9-tails chakra cloak] you get from jonin medal and frag refining starts out looking like 2-tails mode, then at 3* becomes 4-tails, and finally at 4* he looks like 6-tails mode. So if you want naruto with 6 tails in 9tails chakra, you need to get the ninja Naruto[9-tails chakra cloak] up to 4*, or 180 frags.