If the mounting set up is the same and the connections are the same the only difference likely will be the capacity of the alternators. ie one may be 60 amp(example) compared to the other 90 amp( example) It will have the rating on the body of the alternator and the lower amp will work harder to maintain a fully charged battery.
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If the mounting set up is the same and the connections are the same the only difference likely will be the capacity of the alternators. ie one may be 60 amp(example) compared to the other 90 amp( example) It will have the rating on the body of the alternator and the lower amp will work harder to maintain a fully charged battery.