I CAN LIVE ONE HURRICANE OK
252 SpA Moltres Hurricane vs. 252 HP / 4 SpD Assault Vest Conkeldurr: 330-390 (79.7 - 94.2%) -- guaranteed 2HKO
You'd have to hit two hurricanes in a row.
The first one would be before a Knock Off, so you have a 77% chance.
The second one would be after, so you have a 70% chance.
You have a 53.9% chance to hit both, leaving me with a respectable 46.1% chance to win...
used the wrong EVs
EDIT: 252+ SpA Moltres Hurricane vs. 92 HP / 164 SpD Assault Vest Conkeldurr: 294-348 (78.6 - 93%) -- guaranteed 2HKO