Naruto completing "That" Jutsu

[sandshark]

maybe it has to do with an advanceed form of the flying thunder God technique

That would be good, so he wouldn't have to do handsigns or throw anything....like Madara's aka Tobis

 

[Shisui Uchiha]

I doubt it is completing Yondaimes thunder god jutsu, but along the lines of just controlling the chakra from kyuubi without the negative effects.