[John R. Mustang]

How exactly do you gut the stock proportioning valve when upgrading to rear disc brakes and an adjustable proportioning valve? Also why do you need a new plug after gutting it? any help is greatly apprecitated.

Thanks

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88GT, 14deg timing, 3.73's, BBK cold air induction, alum. driveshaft, 65mm TB, 75mm Bullet MAF, steeda tri-ax, trick flow intake, 24lb. injectors,
holley adj. fuel regulator, BBK 190lph fuel pump, BBK long tubes, SHD T-5Z, American Thunder flowmaster exhaust, x-pipe, 13.9@103.2 on street tires, more to come!