I may require a new header tank for the cooling system for my ford RS200 as the old one has started leaking.The finis code in the book is *6130740 and part number 82GB8K218AD.The one removed from the car has part number 82GB8K218FC.Is this still available from anywhere or does anybody know where to get one from.Knowing Ford it may be borrowed from another of their vehicles.Thanks in advance for any help/guidance