We had the same problem on a 63. I could not find replacements so had to make our own. Here is a before and "during the work" shots once we got the patch fitted, TIG welded in, ground down, and epoxy primered. We then performed minimal body wok to dial in the diagonal pillar line, topcoated with primer, and painted the pillar. I don't have a finished photo, but we were very happy with the results. That was three years ago. Whatever you do, treat the metal inside with ospho and coat with POR15 once you have it opened so rust doesn't happen again.Hope this helps.