Rearming French capital ships and delaying Japan

Would the Allies rearm French battleships, and would Japan still attack?

French ships could be adapted to Allied calibers, while Japan likely still fights but later and from a less favorable position.

The exchange pairs a practical refit question with a strategic one. Richelieu and the Dunkerque-class ships might receive liners or replacement weapons compatible with Allied 15-inch ammunition. That standardization would simplify supply after French stocks ran down. Japan might still choose war, but a stronger eastern fleet could delay the decision and deny it the sequence of easy opening victories that sustained the historical campaign.