I have the brembo 00R upgrade kit on my 04 Cobra. I'm in the process of tearing them down to do a rebuild kit and to get them powder coated. I'm replacing some of the pistons due to maring on them from trying to get them out ( was not able to use the air compressor method at the time ) The smaller pistons measure 36mm x 32mm tall. The larger pistons are a 40mm width but what is the measurement of their height? The 40mm pistons are the ones still currently stuck in the caliper so I am unable to measure them and may end up replacing some of these as well. The second question is what size is the hex bit needed to remove the bolt to split the calipers? Thanks.