Reply to "Carpet Replacement"

AJThree: Suggestions:
If you're down to bare metal or your floor is clean, POR15 is good, or some rust inhibitor. Number of companies offer rust prevention products. I used an Eastwood spray product and got into the rocker panels and in the inner rockers, frame tubing, etc. My vehicle was down to the shell with no electrical components.
For insulation I used dynamat. Peel and stick, and it does STICK. Not coming up easily!
I then put down a padded (fiber backed) aluminum (one sided) heat shield, and spray glued to prevent movement. (floor panel pieces only)
Both items cut down the noise and provide insulation.
For my carpet installation, I used double backed carpet tape. It has worked well, and decided to use carpet tape rather than a carpet paste in the event I need to pull the carpet off. The pieces that will get the most use will be the floor panels and foot well panels. The floor panels will get very little movement due to the seats bolted through them. I used the tape along the rocker edge. I figured if it doesn't stick well enough, I can always use a carpet glue for a more permanent fix.
Hope this helps. I'm sure there are a number of alternatives and suggestions.