To the OP, thanks for the pics! When it comes to a sports car exhaust system, I feel it’s about sound, airflow/power & torque increases, and looks - in that order. We already know the sound of the manual Z (my choice) is lacking due to the more restrictive exhaust it has (for sound regulations) than the automatic. So, I’ve gotta see videos posted with sound before I’d even entertain shopping exhaust systems. It won’t be long before the aftermarket floods YouTube (and their own sites) with a plethora of Z exhausts. All that said, the vertical stack isn’t my favorite but the oval tips look nice.