To save headaches, you will need to find a 2.5 tiptronic roller and that may be difficult. Apart from the fact that the dual-row IMS bearings rarely failed, the fact that only a relatively small percentage were equipped with Tiptonics will make your search that much more difficult. I suspect that you may be better off buying it back and selling the engine (and other parts) and then look for an intact early Boxster.
Brad
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