Great idea t8 getting the vendor to put a porsche warranty on it at buyers expense.
i have porsche warranty on my 05 c2s. Money well spent 18 months ago. To date i have successfully claimed for air con rads and front coolant pipes .
imo its a no brainer getting a porsche warranty on the cars that are getting older especially.
it can be a faff getting into the programme but once you are in the club, its sleep easy cigars milk and honey all the way
good luck with purchase