You did not want to hear this, but there really is no good answer to your question. Every mechanic works at his/her own pace. Typically, when the patient is nicer (more important), the surgeon exercises greater care. There are only so many helping hands that can fit simultaneously in one engine bay. And much is dependent upon the short cuts you are willing to employ. Of course, if you know you are going to perform a lot of body work later and the windscreen is webbed with cracks . . . well you hopefully catch my drift.
Having said all of the above, I recall the threat of an impending storm prompted the removal of an E3 engine (sans trans) in about 1.5 hours. Putting it back together proved much more time consuming considering that one does not do the best job of cataloging parts and wiring labeling when rushing.
Unless you have performed this procedure before, with this specific model, I would set aside much of the daylight. Working on an old patient, regardless of its seeming simplicity, is rarely straightforward. First there is the obvious dilemmas: "Do I remove the bonnet to avoid creasing the new paint? Where do I disconnect the exhaust?" Then, fasteners break that shouldn't; The best tools develop minds of their own, and don't work as planned. Wiring has a tendency to change color and location without warning. Then there are the real surprises! (I won't spoil them!)
Start early and expect to stay later than you planned. Beer, weather, the local gendarme, curious tourists and attractive members of the opposite sex rarely expedite the process.
:o :lol: :cry: :roll: