Porsche Engine only good for 100K???

[andrewk24]

Thanks a lot for your replies. I can't remember exactly, but in one of the automotive magazine (Car & Driver or Road Track, etc??) discussed the Boxster in very good detail. It mentioned in the article about the engine failure due to some design issue and it required a complete change of engine (As mentioned by BruceLee). Porsche replaced the engine as long as it was within the warranty period. However, if it was out of the warranty period, then you are on your own. Then, which engine is less prone for this issue??? 2.5, 2.7, 3.2, etc...I am planning to purchase an used Boxster and need your expert opinion to pick the right year and mileage.
thanks