Wrecked the Valiant. Pictures here.

My 73 Duster had the front end pushed sideways like yours. Had the frame "straightened". Several years later both front frame rails started cracking right where the original damage/wrinkling occurred. In a few months the whole front end started coming apart. I was at a job out of state, to keep it going had the frame rails/unibody welded to the K-frame.
Long story short I would not spend the money to repair yours. As others have said...find another car.