Welcome to the forum. That GT350 bug won't let go. 
Welcome to the forum. I have to agree, the exhaust note is sweet, closest to a Ferrari 45(something) i got to drive once. Can’t afford that!......and don't currently own a Shelby, but will be in the market in the near future.
My buddy has a 2016 GT350, after previously owning the prior gen GT500, and let me borrow his GT350 for an afternoon. I was blown away by what I experienced, after coming from owning German sports cars for years, along with a 2016 Camaro 2SS (which I ended up only keeping for a year).
To this day, there isn't an exhaust note on any car I've driven--including my Porsche 2011 997.2 GTS-- that comes close to making me smile the way my friend's GT350 did. And I haven't forgotten that.
So congrats to those of you here who own one.