My experience with Volvo drives has been fairly good - I had a 290 drive that was great except it kept breaking the hydraulic tilt/trim lines. I think they redesigned that? I am hearing of guys who have had problems with the dual prop version though. An engine w 100 hrs has probably been sitting for a while. I would really check the exhaust manifolds - rust does not stop even when an engine does not get run. Likewise the rubber boots get dry-rot of the rubber.
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