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I think LN refers to the IMS Solution as a Permanent Solution. Final Solution has a bad historical reference. What I find interesting is that RND is another Charles Navarro company and they offer the RND RS Cylindrical Roller IMS bearing retrofit, which is what the use in their RND rebuilt M96 and M97 engines. The IMS Solution has a journal bearing, just like the bearings used on the crankshaft and rod big ends in the rest of the engine, along with the front bearing in the IMS. Why Porsche ever thought using a grease filled sealed bearing (lubricated for life, ha ha) was a good idea, along with a 15,000 mile oil change interval by the way, will always be a mystery to me.
For my rebuild after a ceramic IMSB failure, I went with the IMS Solution. For me it is the final solution, because if the engine fails again I will be done with this car!
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