I think this thread is going to be an opinion based one.
In my personal opinion, the best 6 cylinder stock exhaust is from a G35 Coupe/350z Coupe.
Modded exhaust sound holding the stock sound note would be 350z with Nismo Exhaust. That's my opinion.
But changing a little bit the topic, best exhaust sounds EVER, Ferrari 430 and Definitely Porsche Carrera GT mmmmmmmmmmmmmmm. lol.
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