hey--i have the wilwood stuff to put on the back of my car. i took the drum set off this car and peice together to get that stuff we talked about on my kids car. so with installing the dics on my car. i read you just tee into the brake lines and by pass the valve altogether or i have read about taking the guts out of the valve. eather way i think you need to get an aftermarket(wilwood?) proporsioning valve for the rear brakes. i would like to know more about this. i wont finsh mine till after the first of the year.