The car drive smooth and is very comfortable for long trips. The six speaker stereo sounds excellent. The gas mileage is so-so. I feel I drive "normally" and I average 18.2 MPG city. But, it beats the mileage I got with my '95 Z28! The looks are what makes the vehicle! There is no need for after market anything (except maybe a chip).
The stereo makes the drive a pleasure. The vehicle feels "solid" when driving and the steering isn't loose. Large trunk space is a plus as well.
Possibly "squeezing" some more horsepower out of the 3.9 L V6.