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I had the LN Single Row Pro installed on my 2003 S about 5 years and 23,000 miles ago. The original bearing was in good shape still, but for me the peace of mind was worth it. The IMS Solution was still relatively new then. Replacing the single row, sealed steel ball bearing unit with the open double row ceramic was enough for me. As others have said, the IMSB is just one potential failure point on these engines. If you're getting a Raby built special like RFuerst's "The Beast" or just a full engine rebuild, go with the IMS Solution but otherwise just go with the correct LN IMSB for your particular engine. Just my opinion, I am not a certified Porsche technician, don't play one on the internet and didn't stay at a Holiday Inn last night.
Last edited by PaulE; 04-02-2017 at 05:02 AM.
Reason: Spelling and formatting
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