Hi I have just managed to grab some 2 piston calipers from a old CA1 accord. Seeing that I have a DA5 my brakes are the same I believe as the ZC equipped EF’s. I know of a guy who has done this mod anlong with a larger master cylinder and claims it made a good difference. Worth doing you think? Going to keep the factory size rotors may get some DBA’s or something that are better ventilated.