I have a Clark Strongarm lift which I used to move my 1500 'Wing on - it's brilliant but the 400 although far lighter is not flat underneath, so you might have to be a bit inventive with custom wooden cradle on top. I also used it to lower and raise the gearbox on my XJ-S when I replaced the clutch.
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What about a flat sheet of 1/4" steel about a foot square with casters on brackets welded at the corners so the plate is almost on the floor and then put it on it's centre stand - there is quite a bit of weight on the front wheel, so that might need a skate of some kind.
Ian