Rust or Not?

The reason body shop rust repairs don't work is that they don't treat the metal chemically .When I did my 65 Barracuda back in the early 90's I started with a pretty rusted set of quarters.There was no replacement parts back then so I needed to fix things myself.I cut out where I could and replaced the metal but where the pin holes were and in places where I couldn't really cut it out I sanded it down ,wire wheeled it then used this stuff to treat the metal OSPHO Rust Converter/Metal Primer | West Marine
After I did the body and paint I used that car ( never in rain or snow ) and kept it in a garage when not in use.I put over 60000 miles on it and sold it in 2007 looking like this photo taken a few weeks before I let her go. The rust never came back from 1993 to 2007 .So, you can repair it and if you take your time and do it right it will be a success .

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