WOW! That's one mess and a half for a clutch master!
See if you can dig up Jim at Orphan Auto (OH?) for a new assy. He sells these to roundy rounders as clutch and brake cylinders!
EDIT:
HERE IS INFO FOR ORPHAN AUTO- JIM 1-937- 554 - 6 000
This cylinder is described as: " 3/4" Bore, Center Valve, Remote Reservoir"
You will likely need to reuse your original pushrod. Aprox $75-85 Feb/24
Advise if you need a pic' of what the original should be.......or search the forum.
Original markings on #878 Clutch master: EHEB-7707 and #310680 CC3
Rebuild Kits: Raybestos CMK1936 (1983-88 Jeep Eagle, 84-86 Jeep Truck & Wagon applications) Girling SP1995/2 MANY Triumph TR2 TR3 TR4.
Specific Seal# 64673407 First replacement part I ever found for my Goose! Popped out of the 3rd box of seals I was looking thru in the auto parts store! BINGO!!! I'll take it! 1996 or 1997!
JUST IN!!! While looking for the above seal, which is usually all that needs replacing I found this exact seal in a LUCAS SP1967 kit on eBay for about $15!!! It has extra parts, like reservoir cap and washer, but barring the ability to get the SP1995/2 kit, this would do the trick for you and it's cheaper and new!
Gotta run!
Steve
PS: I wouldn't mess with the booster, unless your car has over 100k miles on it! 
It is a Bendix copy and IIRC it is a bugger job to do for that style. The "other" Ford style "banded" version is easier to rebuild....but not used in our cars! 