I'll try to keep this short:
The two brothers, Kinkaku and Ginkaku, were swallowed by Kurama in an attempt to steal him, and survived by eating the meat of its stomach:
After they ate the meat of its stomach, they gained the ability to use the Kyuubi's chakra without the Kyuubi itself:
There is a chance that while in Kushina's womb, Naruto could've gained some of the Kyuubi's chakra much like Kinkaku and Ginkaku.
Note the Kyuubi's influence on Naruto's face:
Note that Kinkaku and Ginkaku have the same "whiskers":
Naruto could possibly have the same ability as the two brothers: the ability to go into V2 mode without a Bijuu inside of them.
The two brothers, Kinkaku and Ginkaku, were swallowed by Kurama in an attempt to steal him, and survived by eating the meat of its stomach:
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After they ate the meat of its stomach, they gained the ability to use the Kyuubi's chakra without the Kyuubi itself:
You must be registered for see images
There is a chance that while in Kushina's womb, Naruto could've gained some of the Kyuubi's chakra much like Kinkaku and Ginkaku.
Note the Kyuubi's influence on Naruto's face:
You must be registered for see images
Note that Kinkaku and Ginkaku have the same "whiskers":
You must be registered for see images
Naruto could possibly have the same ability as the two brothers: the ability to go into V2 mode without a Bijuu inside of them.