Small Block Alternator Bracket

Is this triangle bracket with the TOP stamping installed on factory A/C cars? When I received the numbers matching 340 for my 72 Barracuda with factory air back from the rebuilder, it was installed. I couldn't figure out how to make it fit with the RV2 compressor, so I took it off, and the compressor fit without issue and the belts appear to line up. Am I missing something? I don't like having "extra" parts.

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