The KE70-KE50 brakes bolt straight to the Ke20 hub on the ke10 strut so you dont have to change the wheel bearings. I had a booster in my KE10 out of a Honda civic with a bigger master cylinder and that made the KE20 brakes feel realy good. With the KE50 - 70 brakes, good pads, booster and a bigger m/s that would be much cheaper and a lot easier then trying to fit AE86 brakes. I am not sure but I don't think the AE86 brakes will fit KE10 struts because the caliper offset is different but i could be wrong. AE86 vented disc's and calipers cost a fortune and a hard to find so you might be better off going with something different.