What's the current thinking of sound deadening for the floor pans for 72-73? I have the original insulation in the rear tub/parcel shelf etc. and no rust under it whatsoever. SO that's all good. On the floors I also have no rust but we chipped away some of the tar stuff with the hexagonal imprint at places where it had cracked to check for rust. All looked good, but now I have a few sections of bare metal where we did scraping (including almost all of the driver's side pan) and the remainder with the original black material. I've used POR15 over the bare metal but am wondering what I should do on top of that? Just leave it? Use rubberized coatings like Wurth etc? Or use some kind of modern audio or vibration damping material? What to people think?

Ravi