Reply to "Rocker Panel Rust"

The rocker panels themselves are probably the easiest sheet metal to replace on the car.
The question is always how much rust is there internally that I can't see or find without cutting up the car?
The only way to know would be if you could do something like an MRI on it.
My personal opinion is that vertually all cars, including ground up restorations have some rust remaining.
All steel vehicles will desolve into iron oxide at some point. The question is really when?

If it tests solid to your banging and probing buy it.
Virtually all of the panels on the car can be repaired.