2000 V6 Mustang-Interior buzz near right back seat window
So I have a 2000 V6 mustang and somewhere around the passenger side small backseat window there is an annoying buzz/rattle that I hear when going over bumps. I also hear it when my sub woofers in the trunk are on but the buzz existed far before the subs were in my car.
Anyone else had this problem or something similar?
Or any tips for general silencing of interior buzzes would be greatly appreciated! Thanks for your time