I gutted mine, but I did it because the instructions from SACC restore said do it when I changed to Scott Bells Wilwood kit. The kit I used was just under 2000$ and it used the stock calipers, I got the seperate park brake too. The kit was an easy install and works perfect. The calipers are balanced so no need for the propertion valve. When I get hard on the brakes from speed, the car just stops with no tire sliding or lockup. I went through several sets of used calipers before i bite the bullet and did the KIT. I am glad I did, NOW my car will roll, before, there was always some drag from the old calipers. https://www.saccrestorations.n...ton-w-parking-brake/
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