Well...ripping up the old carpet will be much easier if you remove everything that touchs the floor...trim, seats, console...etc. Then cut and remove. Yes, I had mine Rhino lined, looks great and you cannot hurt the stuff. Try it with the existing heat sheild, if after driving far a hour or so, you can touch the floor after Rhinoing...then its OK. My heat shield had long sence been gone so it got REAL hot, smells like carmel when it gets hot without burning.
Anything els you need to know about this...just ask.
Rev