By using Ashura Path he can grow multiple arms like Naruto's kurama arms and he can enhance his physical abilities and have a 360° vision like Naruto sensing abilities and he can create powerful bijuu like attacks just like Naruto.
What if Sasuke uses Ahura Path on his susanooSasuke could already create multiple chakra arms with Susano'o. But yes, he probably has Ashura Path.
I don't think he can create an energy attack on par with a large-scale Bijuudama without borrowing power from the Bijuu, though. The only time Sasuke has clashed head-on with Naruto's Bijuudama was when Naruto was using a small-scale Bijuudama against Sasuke's Susano'o Chidori, or when Sasuke used Indra's Arrow (using Bijuu power). Normally, Sasuke's most powerful ranged attack is his Susano'o arrows, which aren't that powerful compared to a Bijuudama.
Eh, I don't think that mechanical upgrades can be formed purely from Susano'o's chakra. It needs a physical body to modify.What if Sasuke uses Ahura Path on his susanoo