Rebuilt Alternator ???

Picked up this rebuilt Alternator. Looks like one of the grounds was bent in shipping. I noticed my other Alternator does not have the extra ground. I know grounding is a good thing, but do I really need the one that's bent over in the picture?
Second, take a look at the spacer. It's not really correct, and has the belts not lining up just right. How can I get that spacer out? Does it have to be pressed out, or can I knock it out with a hammer and punch or dowel? Thanks for any help

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Looks like your alternator is one of the later square back models. It has 2 fields so they are isolated from ground. Usually the alternator grounds through the engine at the pivot bolt, where the spacer is. I can't give a reason for the bent ground stud, but my opinion is that you do not need that bent ground.