Buyer would have to have an Unlimited as well. Rubi or not, doesn't matter, as long as it's a TJ Unlimited.
Here's the most important thing. Used Unlimited hard tops are pretty rare. They were only produced a few years vs 9 years for the regular shorty TJ's.
So, they demand a much higher price. Unless the buyer is a good buddy, you can ask a lot more than a regular SWB TJ top.