Apples555

That was very helpful. This confirms my initial impression that there is no alternative to cutting out and welding. Thanks again.

Dear Antique Car Owners, You have a great community, I've been lurking for a long time out of interest. It appears that you all particularly have excellent experience with maintaining these very old cars for the long term. I do not have an antique car. But I was wondering what you would do with this rust damage, if it were an antique car? Cut out and weld, treat, or something else? Thank you, and let me know if this isn't an appropriate question for this forum.