Yeah if I recall, the Injen long real CAI's run to right in front of the wheels. and the Stillen will run in right behind the front Nissan Emblem (sides)
If you live in a rainy area and don't have a bad weather car, the Injen
might be a less favorable decision. However I had my Slowica w/ that optin w/ no problems on a stock height. (which was still fairly low)
The stillen's could possibly use something like the Mine's vents for the intake. Then again, for a stealth look, there are some nice DIY's w/ some dryer ducting ^_^