Chris since this keeps the existing master and booster in place what tire sizes has this been tested on? I'm running 245/40-17 and 285/40-18's. My guess is I'm smaller in the rear than you're running on that Z06 contraption (yeah I know it has more HP and Torque)LOL couldn't resist taking a poke. Would I need to run a proportioning valve on the rear circuit with less rubber on the ground with your rear calipers? And what pads would work well with this combination? Now comes the fine tuning...I remember Porterfield puts out harder and softer pads so there's another variable?