You remove the cowl, fix it, including the flanges where it was spot welded & re-install it by re-spot-welding it. It ain't rocket science but it is hard work, and it is the best way
to do it.......and the only way if You're going to try to sell it for 60K because it has "these two codes" on the tag....................otherwise it's just another amateur re-do for a
driver that's maybe worth 25K at best.....................