Have got myself a leak in one of the main front to back metal water pipes. Believe they are available new from Simon Autos. Is it going to be difficult to change?
If you have a turbo, engine out is the easiest way.
I know that Paul recently had a car with this problem. The leak was near the front so it was easier to cut out the corroded section and replace it. Added a couple of extras joins though.
My leak is right at the back, so I will be cutting out the section in question and replacing it with a short length of rubber pipe (its only an inch from the original join)....and hoping the rest of the pipe behaves!!!!!