“The Girling 3/4 inch master cylinder repair kit (SP1967) as well as the 5/8inch repair kit (SP1963) and 7/8 inch repair kit (SP2029) are widely available from motorsport suppliers, such as Merlin Motorsport as seen via the above links,
or through Raceparts or Burton Power . It’s also worth trying Powertrack Brakes Ltd too as they stock original AP Caparo (Lockheed)”.
