I bought these when I was looking for the fronts. My original plan was to run the stock explorer rear brakes with emergency set up, however the deal was too good to pass up on these set of all four. As they were $325. Just so happened I also found a bracket that mounts them to the ford 8.8 so now I have all those parts and figuring out best way to make them actually work. I have to look up all of my options when it comes to emergency brakes to see what’s ultimately going to be best, but I think some sort of small external caliper that’s cable driven will be my best bet.
