ABS Power Brake at 233 N Lemon St, in Orange can rebuild anything hydraulic. They charged me about $45 to re-build an un-sleeved '69 clutch MC a year or so ago.
No, they are readily available. Classic Alfa carries new replacements for around $118. See: https://classicalfa.com/cl001-clutch...g-pedals-cars/
thanks jay...would you suggest having it rebuilt or getting an new one from classicalfa......guess the answer is obvious since you had it rebuilt...happy to see the master is not different from other year alfas...the brake master is, and was kinda a hassle to fix, but papajam came through for me on that unit