Has anyone purchase the equipment...or a Boxster with the additional factory speakers (behind the seat)?? Is it of good quality...or should a guy buy aftermarket?? Either way, it's probably somewhat expensive to add.
Due to the nature of your vehicle.... Porsche. Don't mess around with aftermarket stuff. This is a marque brand we're talking about here. Think of the re-sale value also. Generally the people looking to buy a Porsche brand new or second hand, aren't very interested in anything aftermarket. But at the end of the day its your choice. Good Luck!!