Sorry for that, it shows some good shots of making a new quarter for a panel truck from the beltline down, including new wheel opening. IIRC it was done primarily to get rid of dent damage moreso than any rust issues..
If anyone were to attempt a panel replacement of that area on the OP's truck, they would be ahead of the game to use TIG or O/A with a no-filler fusion weld, which means absolutely tight joints. I use MIG in my shop quite a bit, but would not recommend it in this instance..
