The water pump has just gone on mine causing overheating problems , i got it replaced under warranty, the dealer rang me and said it would be prudent to change the cam belt whilst the engine was apart as the cam belt change alone incurs a labour charge of £550 and thats without the parts !!, the belt and tensioner and pulleys came to £300 so fingers crossed having the waterpump replaced and the belts done the expense should be over ! . I mentioned to him if so many waterpumps fail why was there never a recall and he said it was rare on a GT !, how many does it take to be commonplace ??, My service manual says 72,000 or 5 years for a timing belt change too, but i would definitely get it done and the waterpump too just for peace of mind.