hi im looking to do the same but im going to use bike carbs on mine 170 at the fly wheel so they say so far this is what i have found out
Using the original Mondeo exhaust down pipe cuts the exhaust cost , its easy to buy a few bends & bit of pipe and fabricate that, you loose a few bhp, but probably won't notice that.

You need the Retroford water rail, cheapest around, but might be able to cut & reweld the sump if you know a good alloy welder.

Engine mounts are from Sierra CVH engine, so get looking for those, spigot bearing is needded for the crank £ 10 let me know how you get on im going gathering up the bits i need wont start it until the winter