you may have to remove the power steering etc from the mondeo lump, or swap it over, but if ur van has power steering and the pumps on the bottom not the top, the mondeo sump doesnt have the bolt holes to accomodate for the pump at the bottom,
you will probably have to swap all the mounts,
i dont know what you would do about the gearbox, iirc the mk4 has a crossmember going from front to back with 2 mounts, mk5/6 escort & mondeo is completely different gearbox mount wise.
if the engine is a TDi with the ECU like mine was, you might have a hard time with the wiring as i did, i have got the whole engine bay loom and ECU connected up with the MAF etc, but i dont think its actually doing anything, it will run anyway if u bypass the immobilised pump.
my van never had an ECU, and the connector up by the bulkhead was the same but i dont think the wiring going on the other side of the plug is the same. my glow plug relay has no live going to it, and when i put a live to it, something in the diesel pump starts buzzing, it runs like crap, and does all sorts of wierd things. im just going to put the wiring back to standard and get rid of the ECU,
more hastle than it was worth imo.