I’ve done a lot of sound dampening work on my Thor Vegas 24.1. The doghouse, dash and firewall all covered to the extent possible with Dynamat and Hoodliner
This weekend I installed the carpet/mat (at the link below) in the cab area floor. That made a Phenomenal improvement. And it looks great. The mat is very heavy rubber with a nice fiber basket weave pattern. I’ll try to attach a picture. Honestly it totally transformed the coach while driving. I also installed the mat in the outside storage bin floors, which I think helped even more
https://www.lowes.com/pd/Mohawk-Home...-in/1000043727
Photo below
Dave