So, on my quest to fix up my ghetto'd out fc, my car has an amazingly loud rattle that SOUNDS like it's coming from the hatch, but it could be something else... the car has an aftermarket exhaust with no cats, no nothing etc. it is loud, and does sound pretty nice, but the rattle kills it! it rattles very, very loudly from 2300-2800 rpm.

is there any "common culprit" of rattling in the back?