Toguro wins here. He easily has more physical prowess and his spiritual energy is pretty good.
If Toguro starts in 80% then Naruto have a chance to have a rasen shuriken land on Toguro, if he does he wins.
Since Naruto have no clone restriction he can spam them and distract Toguro, and Toguro is not the best tactitian.
Still I don't see that happening too often, Toguro 7/10.
Toguro should win. Even if Naruto does land a few Rasengans, it won't really hurt Toguro. He withstood a giant Spirit gun. Plus Naruto's speed is nothing special in that form.
Maybe if Naruto can wear him down with a few summons and then land some Rasen Shuriken but I doubt it.
@eddz99: Spirit gun blasted Toguro several meters out of the stadium as it wrecked its way through a forest and he didn't even feel it. That Rasengan isn't going to do much. And if he goes 100%, then nothing Naruto can hurt him or even touch him due to his speed.