high_octane2001 - Just FYI, but dustang50's post is well over a year old.
FWIW, the "coffee can" exhaust sound is audible for a couple of reasons usually.
The first is that infact, the material in the catalytic converters (IF EQUIPPED) in your aftermarket Bassani midpipe may have broke and are rattling around inside. Remove the midpipe and knock out the honeycomb shaped material.
The second reason is that sometimes running certain midpipe and catback combinations can produce that undesirable "coffee can" rattling sound. Generally speaking, it's usually heard with an offroad
X-pipe and a chambered style muffler catback system (IIRC).
What exactly does your entire exhaust system consist of ?

Are you running a true "full" exhaust - meaning Bassani headers, Bassani midpipe, and also a Bassani catback ? Or just one or two components?
The best way to eliminate the sound is to crawl underneath the car and inspect for any loose exhaust clamps, bolts, hangers, baffles (look inside the tip of your exhaust pipes by the bumper), etc. If all of those bolts are tight, then it could be one of the other two above items I mentioned.
G'luck and welcome aboard Stangnet.
