Zhao Wing would probably remain the same, if not lean in Zhao's Favor, but Duke Hyou would likely hold them off.
Chu Wing is tricky, Rinbukun still dies 100%, problem is how the Juuko Generals interact with Kanmei and Karin. Despite Manu's strength, I doubt he'd be allow to fight Moubu before Kanmei due to the latter's arrogance. If Moubu fights Kanmei still, the same result will still happen, after that I have zero idea. Moubu would be beat out and Genu or Sentoun would both be capable of fighting Tou.
Here's the thing though, the Wei/Han and Yan sides don't change a thing. Ousen would still stop the Chu from flanking and Kanki/Mougou would still stop the Wei/Han assaults. Albeit add a Juuko General to that assault and Ousen is having an immensely more difficult time, but here's the Qin Counter: Akou! Akou should logically still be with Ousen despite us not seeing him in this arc (given Makou's presence in this same time period), and Akou should hold up on his own against any Juuko general (Genu is mostly featless and Sentoun's best feat is holding off Ranbihaku+Rokuomi, while Akou managed to hold off Gyouun+Bananji)
And I FORGOT about Ouki's presence. Given the situation of the battlefield, he's either at Zhao or Chu stands (likely Chu), and there's not a single Chu General (even Manu) who I think would slay Ouki in battle, and Ouki+Moubu+Tou would very much so hold the line (Ouki likely stops the flanking as well). Put him against Keisha & Kochou and I still don't see anything changing. Raido killed Ryuu Haku Kou, and Shin at General level killed Gaku Haku Kou in one clean hit, so no one, and I mean NO ONE, on that Zhao side is beating Ouki 1v1.
If Riboku's sneaky plan goes into effect, Duke Hyou would still stall and Sai would roughly remain the same unless if someone like Gaku Haku Kou also joined in.
So final verdict-
Kankoku Pass remains a stalemate/Qin Victory
Sai- likely Qin victory as well, assuming who joins with Riboku.