Reply to "solder and lead in body"

All the areas Craneman noted will crack paint (& eventually, body metal) with normal driving & age, aggressive driving much more quickly, or with big tires withing a couple of years. A more durable solution is seam-welding in place of the spot-welds in these areas, then any sort of modern plastic body-filler over the welded areas. Seam-welding the whole car with doublers in the windshield post bottoms are also a good idea. Once done, you'll find you have a very stiff Pantera that will not crack paint, even with giant tires, and may not need those aftermarket body- stuffeners! But this is a massive undertaking unless you are totally restoring the machine.