Surface rust prep before sound deadning

Hi All, thanks for all the replies and opinions. Sounds like the POR kit is the way to go. Ive used POR before and liked it but always wonder about the converters if they are a good alternative. The car has the origonal paint and seam sealer on the floors, should I remove the seam sealer, grind and paint the floors and re apply the seam sealer? Im not too worried about weight as Im building the car to be a daily/ weekend driver, looking for comfort and mild performance. Im not going to be driving the car when its raining and it will be stored under cover so it shouldn't see much moisture but trapping moisture mostly condensation that can build up underneath the carpet is a concern of mine. Ive looked at lizard skin for other projects but could never bring myself to buy the special gun and have the permanency of the stuff, if I ever needed to do any floor work, Id imagine its much harder to remove than a mat deadner.

Worst case scenario with the sound deadener, you'd need a heat gun and scraper. Much the same as people remove under coating. Somewhat of a pain, but doable. If the seam sealer is in good shape, I'm not sure I'd remove it. You're gonna need to at least probably need to scuff the paint with maybe scotch brite to make sure the POR15 adheres good. Also, I don't know if you're aware, but ultra violet light breaks POR15 down, so unless you put sound deadener on top of it, it will need to be top coated.