Oh, ok. New info to me Thanks. We don't have 3L in the uk (unless special import).
So you will need to change steering column & steering rack, get power steering pump bracket (1.4tdi), power steering pump, extra pulley and belt for crank or maybe change all the pulleys (not sure, maybe from 1.4TDI). And the pipes. And the fluid reservoir. I have never done it on a Lupo. Golf yes.
or get complete electric power steering system from another 3L car...