The Cummins dealer also suggested trying this website for the noise damping materials. http://www.eastwood.com/My 07 44 that I purchased a few months ago never had the sound panels either, and I was trying to see if it’s worth trying to find them. Ha...
I recently contacted a Cummins a dealer and asked the same. They are available it will just take a while for Cummins to get it. Here is the part number.
