I recently upgraded my car`s brake system with nickel copper brake lines and it has made a noticeable difference .Through trial and error I found that the nickel copper option from this brand provided the best performance for my automotive needs. The quality of the material is unbeatable and has greatly improved my braking power. The only downside is that the installation process can be a bit tricky, but it's well worth it for the results. I highly recommend Carlson Quality H8450NC brake lines for any performance car..