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$1600 seems a bit high. I have one I have been toying with selling, and would be happy to beat that price unless shipping is silly expensive. (I have 3 seats and one is mounted to a driving simulator no one is using lately) I would need to dig to see if I still have the OEM side plates though. I strongly recommend the BK side plates if you are tall or want to drive with a helmet. I do have the correct sliders, but I suspect it is passenger side. The sliders are symmetric with the handle just being in a different position, so it works either way.
Let me know if I should get you pictures and dig for the set of parts.