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George Lendich wrote: 
Are they really going to have ceramic coatings on the side housings? 
 I have nothing to suggest that they will, other than it being the most realistic choice.  The other option is steel inserts.  Steel inserts are doable, but they carry a lot of machining, joining and dissimilar metal baggage.  The ceramics would be a cast/bake in place operation. 
 
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