Quote:
Originally Posted by acj47
are the billet side cover (ex. CMS or Wevo) and bearing retaining plate considered 'must-do' upgrades for a 915 rebuild? any reason not to spend a little more $ for them?
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I consider the one-piece bearing plate a "must do." Guard, CMS, and Wevo all make them.
The billet side cover is a bit more situational, but it's never a bad idea. Certainly if you have a magnesium case, and especially if it has corroded around the steel fasteners.