gbrettin

Try a set of Weathertech mats in your Z if you want to stay away from carpet mats. I have them in my Z and they fit awesome.

2010 Nissan 370Z | WeatherTech FloorLiner - car floor mats liner, floor tray protects and lines the floor of truck and SUV carpeting from mud, snow, water and dirt | WeatherTech.com

I think a twin turbo system will help you with your bogging down issue. You conveniently get a tune with it too!