I also have the Stoptech setup (in 14") and love them. Once you take the car to a point that you are planning on spending money on some serious upgrades, spend the cash on brakes. What good is having an excessively fast car that can't stop? I wish I would have gotten them even earlier after driving with them for the first time! We don't all need to go with a 4 wheel kit [ http://www.stoptech.com/productphotos/300zx/300zx.htm ] but it is definitely a mod that should be considered sooner rather than later.