I searched but didn't see much. My son (16) inherited my wife's GX and of course is in the process of de mommifying it. Wheels and tires were first. Much improved look. He's thinking exhaust but I was curious if a cold air intake wouldn't bump him enough. However, when googling about them, it almost seems like they're non existent out there. Is this not a common mod? No space under the hood for one? Just curious if any of you had any experience here. Thanks much.