engine mount need a small amount cut from the back to allow it to clear the 16 valve head .

as for just pluging it all in , well , as previously stated u will be needing to fuel 1.8 l

a ecu from a rs1800 may work or a fiesta 1.8 Xr2i ???????????????????? the looms look similar so this may be a better option for you , youll still need to do a couple of mods but the maps will be correct .

If your gonna use a 1.8 zetec use the Escort one , the mondeo uses a different inlet wich fouls on the Mk 4 bulk head , the sump is also different and the exhazust will be another thing to add to the to do list .

Water pump will need replacing as iut goes the wrong way and although u can get away with the oil pump , again the 1.8 escort is a better option as you can put a larger filter on .

Dont want to put you off hear bud as it isnt as bad as it sounds , but be prepared , i bet there are loads ofpeople out there who think its a question of " just plug everything in "

well its a little bit more than that .