Thank you all for your replies. The company where I am buying my car in Austin is not a big dealership (i.e Porsche, etc....) it is from a used car company that sell high end imports for the most part. I never trust these types of dealerships to be honest.........so I will have a pre-purchase inspection done to the car prior to me buying the car. If everything checks out I will buy the car, if there are too many red flags I will walk away.
So I think what I will do if I buy the car is to forgo the extended warranty and take the car to an Austin Porsche mechanic to do the retrofit for the IMS............
Does that sound like good logic to you folks??