These are sick but extremely expensive. I'm planning on getting straight cut gears for both my S13's. PPG makes them. The whining noise isn't as loud as this car (LOL), but it does sound beautiful. If you guys didn't know, a reverse gear from MOST cars are straight cut, hence the whining noise you hear when you reverse quickly. But when you have straight cut gears...ALL your gears sound like this (almost like the super charger whine). And yeah, also getting the dog box set up!!