I agree that those are the torps we need, specifically the Kai 3 Modified or later.
However, the B5N1 is a 1938 torpedo bomber that ceased production in 1942 and we are unlikely to get anything more modern than the torpedos they carried at Midway.
Later on surviving B5N2s did carry these later torpedos, but I think it a rather forlorn hope to expect anything like that.