This kit includes three different materials that have been optimized for the most ideal sound for the 991/981/718 cockpits. Some materials are precut to fit the contours of the inner door. Installation is clearly demonstrated in this video from MusicarNW.
This video, also from MusicarNW demonstrates the door panel removal.
If you’re not familiar with MusicarNW, you can check out their website at musicarnw.com or search rennlist for their many posts.
Cost for just the door sound deadening kit was $295. I am selling the kit for $250.
