Quote:
Originally Posted by Maddog
... Is there an increase in noise vibration and harshness ? ...
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Any time you use stiffer/harder bushings, there will be some increase in NVH.
New bushing seems to be a popular option when modding/replacing diff so a site search might provide some insight. From what I recall reading on here, there is an increase in NVH but most people consider it a small price to pay. YMMV