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Does the turbo need to be rebuilt before installing?
I never ran the turbo it was on a motor I purchased that was rebuilt. I wouldn't rebuild it. Has very little up and down shaft play and no in or out. I have felt other freshly rebuilt turbos that have similar shaft play. Not saying it's new but I would rock it.
 
Sorry for the delayed response. Currently 450 is where I'm going to stay on the turbo. If I decide to go lower in will let you know. I appreciate the interest.
 
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