Tracking down an exhasut system rattle

[Natty]

I've been driving over some rough mouuntain roads all summer and now my exhaust system has a wicked rattle.
All the head shields have been removed.

I suspect it's either the cat, the muffler (new, but it's a Meineke POS) and the tubing itself rattling.

How can I track it down? When I have a friend rev the car while I look, I can see the whole systen shake, but I can't pinpoint the rattle.

[thetopcow]

i know on my apexi exhaust that my driverside seat bolt hit the tubing. granted it is a 3" tube. this is on my 90 240sx hatch. i dont know if you tubing is oversized at all since there arent any specifics, but it is something to check

[Natty]

My car is 100% stock. I have a 1991 Hatch.

I guess it seems obvious, but I didn't check for clearance issues.

[chuy]

Just take them all off the only 1 I have left is the one on the elbow bend before the cat.