Alright, that's enough flame action.

Clear tails, or any aftermarket tails for that matter, are not very popular for 240sx. If you can't find anything on Google, you probably won't find anything. Clear corners makes some red/clears, but quality is poor. A few companies in Japan make some "euro" style ones, but they're hard to get. They may be out of your price range, but look up kouki 180sx OEM tail lights.