Hi all, does anybody know how the jack support 'tube' is mounted on the car. I know it is welded to the bracket that sits on the inner sill, but is it welded to the body in other areas as well?

I'm asking as I'm thinking about replacing one of the tubes by cutting through the weld that holds it to the bracket, without removing the outer sill. And then slide in a new tube and weld it back on. I'm not using the tubes anyways, I just want to get rid of these rusty things.

Madness or .... ???