I should probably be on the jbody diy'er forum but I doubt there is one. I see your point entirely. But just for s and g let's say you're strapped for cash and you just want your ride to make it through the winter without the quarter size rust hole in the rocker panel to get any worse. If you block the source of the rust ie. salt, debris, or whatever, with a really nice plastic, made to fit, panel, it should do the job. And then a lot more. You might be done rusting. I'm not trying to cheapin' the industry, but for my little world, this is what I need.
Things tend to rust from the inside out (at least the lower quarter area on my type of car). Covering it up will only hide the problem while it still gets worse.
2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero
Rust repair isn't to hard if its a small area. Is it a hole or just surface? Post some pics of it.
He is talking about the lower rear and it does tend to rust from the inside out, I have to do mine soon too, the sideskirt happens to be covering it now. lol