Should there be evidence of factory spot welds, visible with the trunk opened, and if so, how many, indicating the presence of a 69 Quarter Panel Trunk Opening Stiffener?
On the cars I've done they were barely noticeable, unlike pronounced ones elsewhere. Use of the spot welder by the tech produced varying results. At least you have them. Many cars that roll into my shop did not, nor were the quarter window braces/reinforcements present. Just installed all of them in yet another car. Butcher shops.