Tail light restoration

Did a few searches with no luck. Want to clean up a 69 Fury tail light lense and paint the reflector [if you can call it that, it looks bad at reflecting even when new]. It is an extra. I would also like to know of products to safely polish the lense. I want them to look better of course but put out more light. If gaskets are bad what have you guys used instead?
Here is what I got.
Thanks

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Author: Turboomni