R Model Exhaust Sound Files???

What does an R Model exhaust sound like? Has anyone purchased something like this:

http://www.mustangsunlimited.com/it...y=Shelby+Exhaust&subCategory=&CatKey=SMUSTANG

I currently have a rusty, glasspack, rear exit system on the '66 that sounds rather tame.

I'll avoid the typically pointless web forum question asking "is this exhaust loud?"

But, I would like to know what it does sound like. Deep, droning, interior resonance, sharp, booming? I can't seem to find any good video or sound files online...yet.

Thanks,
LS