I've done it with an AC car with engine in situ.
Not a massive problem.
You can undo and lift the brake servo out of the way with the lines attached......place a blanket on the fender and lay it there.
The biggest pain is getting at two of the bolts at the bottom of the clutch housing.
The second biggest pain is the flywheel....hopefully you have a puller that will fit in there and the flywheel comes off easy for you.
"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May
"WET COOPER" (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge