best to have yours reworked by a qualified shop. i ahd mine screwed up by a shop in the NE. Found a man(Rowland) in Burbank Ca who advertises in Hemmings every other month. He knows what to do. All impala, bela air biscayne hinges are the same
do not remove the quarters. Repair what you have or have a professional metal fabricator form proper gauge metal to replace the damaged. I learned the hard way and my very nice 62 was destroyed. the intergrity is nevr the same