[DCRANER]

Originally Posted by Destructo

I'm going to be looking too, I just ripped out all my vinyl flooring and old moldy soaking wet insulation, but won't be putting any carpet in until I fix the leaks and re-paint the floor. I am hoping to find some full carpet that runs all the way back, and I need some sound insulation suggestions also, I hear dynamat it good, I plan on running it all the way up the back of the cab.

I did my carpet, ACC Carpet about 5 years ago and when I ordered the kit I was able to request an extra matching section to cover the rear of the cab behind the seat, and tucked it under the rear window rubber strip. This worked very well. I also first did the Dynomat on the floor and the rear of the cab.

I can tell you one of the common places for a leak is above the firewall, just under the wiper area. If you remove the cowl and have someone spray a hose on that area you may find a leak and / or clogged drains. I sealed my area with 50 year outdoor silicone weather caulk, and also shine a drop light at night in that area and look for light coming in the interior area. Sounds like a lot, but easy to do. My 86 GMC is garaged, but can sit in a thunderstorm and is bone dry inside, not a drop.

Good luck.