Moser, as an audiophile (I may not drive well, but I can hear...) who is into exhaust sound, WITHOUT question if you would like the Turbo to have any chance of matching sound with the GT3, you need to get an after-market system like Cargraphic.
And IMHO I don't even need to wait to hear 997.2 to say that. There is no way Porsche will make a stock car sound as loud as something like the Cargraphic System, especially a daily driver like the Turbo.
I suggest you wait for Cargraphic to come out with their system. I don't know if they have the Loud Version where you are, but given a choice, that is the one I would get. I have this in my Turbo and much to my surprise & totally unexpected as a matter of fact, the sound is now of the things I love most about my car.
Ferdie you're very welcome.
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Regards,
Can
997 Turbo + Bilstein Damptronic ( Review ) + GIAC ECU Tune ( Fast as a torpedo & reversible to stock - Review ) + Cargraphic Exhaust ( Oh heavenly noise! )