i'm sorry but i will be honest on how i feel and what i have seen. Goku anyone knows is the strongest. so luffy and naruto would work together untill they beat goku. spoiler alert!!! remember the episode with naruto and ten tails? how he could give others nine tails chakra and that let them go one tail form. naruto would do that with luffy then luffy would go second gear and use haki, naruto would go nine tails form and that would make goku go ssj 1 maybe even 2 if really pressed, but the end would be the same. goku. sorry but i love luffy not BIG on naruto but i think he is ok. but goku would win.
listen u guys need to give mor credit to naruto if naruto gose in his 4 tails mode he would beat luffy and if he gose into his buji mode he will probly make goku go ssj and fight him dealing goku some damage but in the end goku wins then they will all go and eat their asses off as friend become the ultimate 3 man squad
Sad to say, but Goku pwns all. Luffy would mop the floor with Naruto though. I don't care if Naruto goes nine tails of sage mode, Luffy "Gear Second, Offensive Armament" = game. Luffy wins... flawless victory. Then Goku would just use a warp kamehameha and Luffy disintegrates. Goku > Luffy > Naruto