65 GT Rear End

I am curious about '65 GT rear ends. I have seen pictures of others posted for sale etc. but mine seems to be different from the ones I have seen. I know the exhaust isn't how it left the factory but the trim between the tail lights seems like it is and the fenders also seem like they are factory but I haven't seen another picture with the vertical pieces on the bumper. Any other 65 GT owner to chime in.
Thanks!

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