V-gate Shifter Mounting Brackets

I have 2 mounting brackets for V-gate shifters. The part number of one is S1-9033, the other is 9-9033. They are indentically the same shape and hole patterns. The threaded hole are different though, which I think can be seen in the picture.

Can someone please tell me what application these are for? I think E-body. But what is the other one for? Help?!!? :banghead:

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