Can't say for certain because of the Spica. I changed the mounts on my 1750 last month without taking the Engine out, it's on Carbs though.
It's tricky getting at the offside one as it's directly under the inlet manifold and I struggled to get my hands in to undo the bolts, with the carbs in place. I did manage it, but I don't know how much more (or less) the Spica set up takes.
In general it's an easy enough job though, just take the weight of the engine on a jack under the sump (With a spreader), and swap them over one at a time.
Good luck
