I just did mine last week and it made a noticeable difference! I was a bit shorter on time than I had planned, so didn’t remove the back seat, just pushed it forward, pulled the seatbelt cover and plastic trim from the top, then pulled the back carpet down. It’s not perfect and wasn’t as easy it would have been if I had removed everything, but it made a noticeable difference in my exhaust sound and ambient noise. I also pulled the two storage tubs and placed kilmat under those as well. Door and speaker upgrades are next. Pic is when I was about 1/4 of the way done. Will do some touch ups later if I want to full coat everything. I covered about 80% when I was done.
