So I have a 71 with factory power disc / drum that I recently upgraded to Wilwood four-piston calipers up front. Works OK and all - but still use lots of pedal pressure and not getting much 'stop'. Wilwood tells me it should be fine - and I am going to get an adjustable prop valve - but I'm still using the factory master cylinder: Which I believe has a 1 1/32 bore size. My thought is an upgrade is needed anyway since the factory one is old, heavy, and probably not giving me the best performance anymore. I am thinking about upgrading to something like this. with a slightly larger (1 1/8) bore, and obviously lighter weight: Of course there are tons of options - and I know more bore will increase required pedal pressure, but I have also upgraded to the Wilwoods - so is more volume or more pressure needed? Anyone school me on what master would be a good upgrade and why?