I started with the trunk and rear seat area for sound-proofing. I tried not to go wild so, just a single layer except where there was factory noise mateng, then I doubled up, and it only took 2 roll's of peel n seal type tape.
I was thinking of sikping the floor pans and only tape the driveshaft hump up to the firewall, that should save some money and time??? (chime in here LOL)
after cutting down the noise, and a good deep cleaning along the way, it should be time to make her shine....