I will never forget a 911 GT3.
The people who own one or more are real lucky guys.
Imagine how a GT2 will be?
One thing is tru, in my opinion you will torture a GT3 when it see only a highway.
It needs a fine racetrack, and for the streets your choice is the better one.
The sound is not loud, and a GT3 is not at it’s maximum. There is space for more horse power and performance upgrades. The suspension can handle more than the standard specs.
This to the 911 991.1 The 991.1 is when you chose the turbo, a great choice.
I have no experience with a 991.2. See other replies who can help you about a 991.2 turbo.