I would buy a complete 110 engine as you know all the ancillaries will fit from your old engine corerctly, and most s/h places will give a guarantee on the full engine but not on a block.
Not sure your engine has swirl flaps,but the Vito (W639) 120 CDI does, see if there's an actuator on the inlet manifold with a bar across the under side that controls the swirl flaps.
My bad mentioning it as I was in conversation on PM to someone else regarding swirl flaps in a vito.