So, the GT has aftermarket headers (not sure what kind), a MAC ( I think) H-pipe with hollowed cats (no idea how that happened ) and Flowmaster mufflers.
I'm not happy with the exhaust sound. At idle it sounds nice -- wub, wub, wub, wub.
But at any more than low throttle it just turns into kind of a loud low-pitched moan, more like a typical 70s-80s V8 luxury car. It doesn't have that distinctive 5.0 aggressive exhaust note. It's reasonably loud because of the hollowed cats, but not "nice".
I think just replacing the Flowmasters with a different model will improve the sound, but I'm not sure. I don't know what model it has, though and don't want to buy the same ones.

This is a pic of the type of Flowmaster that's on it. Any one able to identify the model? Or have advice for better exhaust note?
I don't want to do a whole new exhaust, or even just a cat back. Would rather just get the appropriate mufflers...

flowmaster.jpg