Marcos Maniacs

Hello,John
My 1971 Marcos with a 3L Volvo has a dual master cylander that I have 
replaced part # is 036j 0628 as per Dave Bean Engineering, AKA davebean@.com The 
system in my car also hase a proportioning(bias) valve that is probably from a 
TRGT6 this is the only part of the of the brake set up that has not been replaced 
or resealed.
Regards
Mark