Frame behind front wheel arch rust

[ahurdle]

I removed the wheel arch to take the side panel off for exhaust work this weekend. In doing so, I noticed some of what is either rust or seam sealer deterioration in the metal in front of the cat immediately behind the wheel arch. My question is how do I repair it? It is not bad, but I either want to clean it up and add new sealant (what kind?) or scrape it and add rust preventative.

The cats are gone, and the entire exhaust is being coated, so heat should be much less of an issue. The car does not see winter use, and rain is avoided. It only has about 20000 miles.

Will post pictures soon.

 

[ahurdle]

It appears to be some sort of sealer that has rotted or burned, and come off. I have a couple of weeks before the car is back together and am trying to make sure I address any issues like this. Thoughts?

 

[snakeSRTops]

No structure damage. Just clean it up. Rust treatment and paint. Should be fine.