useful(?) info: the MGA master cylinder was also used in the sprite.
the bugeye (and all drum-braked spridgets (through 61-1/2(?)))
use a 7/8" bore master, whilst the disk braked cars use a 3/4" bore.
in '67 they changed to a different (separate from the clutch) master..
there should be some used 7/8" units knocking about as people
like to put the 3/4" master in when they switch the frog to disks..
don't know the bore of the 'A' master, but i'd wager the cat it's 7/8".
hanz, '58 frog, san francisco.
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