Yep, those are rocker bars (or sill bars) in the photos. Looks like they're required in unibody cars with a modified floor. Not sure what they mean "modified floor." I'm sure there's quite a bit of gray area. In other words, if you install stock style floor pans over what you've currently got, I'd doubt NHRA tech would stop you. Who knows though. Just wanted to pointed it out so your're aware.
