Quarter panels, let's cut em off and put new ones on.

Inner fenders will not be too bad to do. get the old ones off and get a nice clean surface. Mock up the new ones, even with the AMD there may be a slight amount of tweaking. Mine was at the very front where they had bent down a bit from shipping. Drill lots of holes in the new part for the plug welds and go to town. On my Barracuda getting them just right in the rear where the quarter and roll pan are was the most challenging