What year are your cases? The later cases have a smaller jack shaft bearing on that side so the cases are stronger. Most of us 851/888 guys use ST4 cases although I think any of the later cases are pretty much the same. I just assembled a 94 Monster engine using 99ssie cases and it has the smaller bearing. If you decide to go that route watch for differences like oil pressure relief valve location etc.
Last edited by marvin; 06-15-2009 at 09:50 PM.
Reason: typo
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