a dude is interested in my rotors and calipers I have up for sale on this forum. They are from a AE92 Corolla CSX (non-4age and not vented & single piston), he wants to upgrade the ones on his ae82. I just wanted to find out if this would be actually upgrading to a better brake??? The ones I have on my car are from a ae82 bigport (vented rotors and calipers) So I am not sure if the cs & csi have smaller brakes or something??