Give Terry Foxon at G.E.E a call
He normally has the PMA100 Master cylinder on the shelf
Simon @ SiFab.co.uk
Which way do the brake lines exit from that when viewed from the back of the car?
Towards the centreline of the car if I recall correctly
Tandem cylinders were all the same from 1971 (ish) through to 1993 (ish)
Simon @ SiFab.co.uk