Thanks guys, I don't want to cut existing lines or drill holes in floors etc, I understand why ya'll have done it and think its great but its not something I want to do. Brad, no, I use it to prevent the rear brakes from working, I simply press and hold the button, then press the brake pedal to hold the car in one spot while I rotate the rear tires to check for even wear at high speed, then ease the brake to control roll forward or not etc. Rather than locking the front brakes solid, either on or off, this way I have true roll control. Right now I have typical rear drum brake lockup, I guess once I put the disc set up on I can install one if required.