On any machine with electrolytic capacitors (the tin can looking things) you will want to replace them regardless of functionality. While they may still work, they *will* still be leaking on the board, which will actually eat through it over time.
As for doing the actual recap: if you are good with a soldering iron, you can solder on new caps. https://wiki.68kmla.org/Capacitor_Replacement
You can get the capacitors from trag, a member here, for ~$10 shipped to you.
*THIS IS IMPORTANT* if you are only doing a single recap, you can *probably* get by with a Radio Shack soldering iron. I really recommend getting a decent Weller or Hakko soldering iron instead.
If you don't want to bother with it, you can contact uniserver.