Thanks for the help. Rang Ford to see how much a new Cat would be, could nearly buy a new car for the price! €1100! I would love to be able to re-use the parts but the rust is bad from what i've seen. Going to replace them now and if they are still good, clean them up and have them as spares.
Found a new cat and flexi for 200 or so from Ebay, clearly not Ford but whatever. Unsure on either a Scorpion/Mongoose/Milltek cat back exhaust. Any idea on them?