Car was unbearably hot in the summer, so I decided that my winter project would be to fix that.
I laid Dynamat on every surface possible and in the drivers area laid Relectix along the firewall, floorboard and 4speed hump. I also sealed off the large hole for the shifter.
I then ignored the carpet buying suggestions of many here and bought a new carpet from Classic Industries (OER brand) because I could get it cheaper on sale. After receiving it rolled up as tight as possible in a bag inside a box on a 2 degree day, I laid in out in a corner of my living room to thaw and "relax". 2 weeks later I decided it was time to lay it. The back seat area wasn't too bad to do especially with the help of a hand held steamer in the forward seatbelt retractor area and lots of 3M spray adhesive.
The next day I tried to lay the front section and it refused to come close to laying properly and had no throttle pedal clearance due to all the dynamat and reflectix. I pulled it back out noticed on the back side 2 places where the padding was bunched up when it was originally glued down. Wife and I spent 2+ hours with razors cutting the pad loose. I then used only portions of the pad in the flat footing area, but it would not stick to the reflectix. Wife suggested gluing burlap to the reflectix for the carpet to bond too and it worked perfect. Then tried to lay carpet but there wasn't any provision for the area of the hump where it ends and curves sharply and steamer would not do any good.
Got disgusted, tore everything out and threw it away. Ordered ACC carpet from RockAuto. It also came in the same size box as the OER and on a 10 degree day but not in a bag. Opened it up and looked at backside and it also had the pad bunched up in a couple places from not being glued properly.
Cut all pad off. Laid sections of pad where needed. This carpet was formed properly and laid a hellva lot easier without need for steamer. Project is finally done !!
Moral of story.... pay attention to what your told, but even then don't expect perfection from suppliers.