Oh boy, this is a very doable task but it is ALOT of work. The IDI being a strictly mechanical beast and the PSD being an electronic beast means you not only need the 7.3 PSD engine, you also need the truck it came out or (or another PSD truck) so you can scavange ALL of the harnesses, the electronic sensors, the PCM, the IDM, the dash/speedo cluster................
did I forget anything guys?