I was conteplating a z when I was looking for a daily. Unfortunately with a family, it wasnt much of an option.
I decided to settle with an Altima 3.5, same motor, same power, just more room. I have no issues keeping up with lightly modded 350s and g35s.
The vq35 definatley loves to breathe. Headers and full exhaust help out a bunch. The test pipes are a huge help on the zs as well.
"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"