The improvement in stopping power and reduced fade is impressive. No loss of pedal after a full 30-40 minute track session. Being able to adjust the front-rear bias is nice on the track. It can be scary in the twisties until you get it dialed in. With the Wilwood rears, there is no going back to stock since you have to cut off the oem caliper mounts. I don't know if the other brands are the same. There were only minimal instructions on the install. I got creative when installing the bias adjuster and line-lock