I know its a little late, but are you still on the hunt for one?
Only I have a 1993 complete Kona Explosif in 19".
Front end isn't original, but I was about to start the journey to get her back to standard.
Though I'm in two minds, as she is a little too big for me (18's a stretch for me).
Not sure if to restore for something to do, or sensible option is to sell it on or break and get something ride-able.
Anyway, Just on the chance you're still looking
Tony