For the Japan market Rover originally removed the left hand strengthening strut to enable fitment of air coditioning, but we modified ours to fit every mini without detriment to the grilles strength. As supplied to Rover by us.
From February 1993 all models were fitted with this grille.
と記載ありますが、当方はカーショップではございませんので現車はなく自身で確認することはできません。