Yep think I test rode one when I got mine. Probably 1997, 1998 or 1999.
I got ( and still have) a 1999 Sunn enduro ( db tange cromo frame).
Think the tonic had Fuji tubing.
What colour is it?
iirc they were cromo and blue trim or yellow. There was the tonic, tox, enduro and other ones.