I can assure you swapping components between N9 and N900 like that will not yield a working device. Or between just about anything you can try.
With motorcycle parts you can mix & match mechanical parts but with electronics it is a bit tougher; the pinouts are different and the components need the other components around them to work peoperly.

With electronics there is a simple rule-of-thumb; only replace parts with identical parts. (and of course because the rule is simple there are exceptions but if you need to ask, you are guaranteed to fail )