I just had to deal with Replacing both masters and pedal return springs on the pedal box!
It took me three hours (with breaks because back hurts, fingers don’t fit, eyeglasses falling off…I could not believe why I couldn’t get it out) to 30 minutes to put it back together! There must be a way because there was just no way that back then in Italy they did the same bloody thing! The hole didn’t shrink in the last 50 years… I guess lol
I have the “assist” system for the clutch but I think in general it is the same to get the box out….
Here’s what I learned: suck out all hydraulic fluids of the reservoirs. Disconnect all the hydraulic lines and plug them. Remove clevis pin on brake master. Remove brake pedal stop / brake light switch bracket. Undo fasteners holding brake master cylinder. Depress brake pedal and fix it spring with zip tie so the pedal can loosely move around. Remove gas pedal stop… it’s a Bit##! Welded that bolt on the stop! Undo all nuts and bolts holding the pedal box - 2 person job or needle nose vice-grips! I replaced all those bolts with Allen head bolts, also the bolts holding the clutch master! Disconnect the throttle cable from the pedal. Go to the front and pull pedal box partial out and canted like in the picture… remove clip from clevis pins and push them out! The pin connecting the clutch master as worn in (small steps) needed some lube, turning and gentle tapping to leave… you may have to try different ways.. from the inside footwell (I couldn’t) or from the trunk.. once you get the pin from the gas pedal and you are able to pull the shaft with pedal out you will find things at getting looser! In the end you have a dogleg casting with 3 holes, One of them has a needle bearing which is for the gas pedal going through, and on the upper hole or two flat steel arms attached that connect to the clutch pedal shaft arm . A small L bracket that attaches to the lower bolt ( needle nose vice grip to get rid of it… replace with Allen) of the clutch master cylinder and on the other end the gas pedal shaft goes through. And the hole in the middle get pinned to the clutch master. with all this removed, and both pedal springs pulled together and secured with zip ties bring there arm that is attached to the clutch pedal shaft straight down parallel with their pedal box plate and the whole assembly comes out!
With ease!
to put it back together: put the pedal box plate back, (angled like you see in the very first top pic) attached to flat steel pieces to the clutch pedal arm (I did this from the footwell with a longer clevis pin, a one handed “Houdini” and then pushed it out with the correct one from the trunk side) and Pinned it from the footwell side! Then hang the clutch master on the dog leg (IMPORTANT!!!!!!!! with the pedal hanging down the clutch master should stick out - I think you can put it together with the pedal fully depressed and the master cylinder not doing any action) 
stick gaspedal shaft back in, back outside put L bracket onto gas pedal shaft, insert Allen bolt into clutch master… (why did they use hex… ???)
Sounds intimidating but it really is not that bad! Have patients,have grease, have new Allen head bolts (invented 1909) and life is gonna be so much easier! Yes, it’s not original but I don’t grinch anymore if I have to go down there to do some work!
I put it back together on the workbench first to see how things go together because Parts Were just falling down into the foot well when I took it apart but now it makes sense.. three hours to get it out 30 minutes to put it in
Now it would be 20 minutes out 20 minutes in…
Like with all Chinese puzzles… Once you figured it out… It’s easy!
(updating as I go along)
Picture above!! This would be the wrong position to put the gas pedal shaft in!
see, those two pins visible can be reached from the trunk, once the are removed the arm from the clutch pedal comes down and you can remove that pin too! Ready to pull the assembly out…😅
Do you want me to post more as I go through my “new” car ??
Electric incl. headlight motor, external fuel filler, bleeding, steering and more are on the list..
like ❤️ If yes…
otherwise I just shut up
