Rattling sound on my 2000 I-30

[i30atl80]

I have a rattling sound on my 2000 I-30 whenever I accelerate. I think someone mentioned that they had the same issue and that it was probably a loose heat shield. I looked underneath the car and did not see anything that was loose, though I may have missed something. Where exactly is the heat shield located at? And if it's not the heat shield, what are some other possibilities?

Thanks in advance,Jeremy

[maxhopper]

There are heat shields located on the y-pipe (around both pre cats) as well as on the main cat.

[jltibbs]

i have the same prob on my 95 max and i can't find it. i don't think it's the heat shields. i got headers installed a few months ago and all of my heat shields are gone; still have that ANNOYING rattle.