excluding the clutch £200 inc loom and ecu, thats based on £80-100 for the complete engine, loom and ecu from a breakers and 100-120 for the relevant bits to convert it from a fiesta/escort. i.e water pump, sump, oil pickup, flywheel, inlet manifold etc.
Then add whatever you think the clutch is worth secondhand and maybe some money for your effort in assembling it, £350-400?