Allan, the Turbo engine is pretty much bullet proof and does not suffer the IMS or bore scoring issues.
A possible over rev and front radiators are the things for a 997 Turbo, the Rads are about £800 a pop and over the years apart from small niggles a starter motor (again (£850) were my only other claims in 6 years
WD and others are available, there has been good mentions of the company that is sponsoring the other Porsche club with quite a few reporting good experiences with them.
My car was always in Porsche extended warranty and with the radiators it about paid for itself, especially if you consider that it comes with breakdown cover included at that cost.
I've been brought home on the back of a low loader the once due to a tyre blowout and they couldn't source a tyre for me in time (bank holiday)
My car was parked next to another 997 that had a suffered a rear puncture over the same weekend!! he was with standard RAC breakdown, the difference in service was more than apparent, right up to the point we left the carpark with him still waiting for a ride....
