[First opel 1981]

For future reference, I've found, it's far easier to drop the engine and transmission, then do the clutch work, and replace the engine and transmission than it is to try to replace a clutch component with the engine staying in the car.

I only said "I've found" because there's usually a person or two that would say they've done it with the engine still in the car and it wasn't that bad.

I've done transmissions three ways. Engine in the car, engine and transmission pulled from the top. Engine and transmission dropped out the bottom.
The last method is the easiest.