I can confirm that the old clutch set was working because I can see visible signs of disengagement. How well it worked? Couldn't know. Without the starter, I pull engine and trans closer to chassis which I hook up the slave cylinder which has already the clutch hose hooked, and depress clutch pedal. With a flashlight I can see and via screwdriver I can confirm that clutch is totally separated - i.e.: it moves freely. Clutch pedal doesn't have any freeplay though.
I do know the owner and he told me that the clutch was recently changed before engine failure (around 2003/2004 ish) somewhere in Sweden, if I recall correctly. But the clutch is worn out measuring around 6mm thick.
Ah yes, an expert of uninstall and installation of engine with trans. Humor based on my pain.