its easy enough to drop them out the bottom, just lower the engine on a jack onto the floor then jack the car up a bit higher so u can slide the engine out, then slide the new one in then lower the car then raise the new engine into place on the jack, ive done it this way countless times on my rs turbos and dose'nt take long
did the same with a mk4 Fiesta, would prob be easier with a crane though if you had access to one.