Based on your SN, pretty sure that indicates a 1991.
I had a 1990 Gara, Cromor tubing w/27.0 seatpost.
Internal cable routing, including the handlebars.
Came with a 600 group.
The rear triangle is now a work stool as I bent the frame. Still have the chrome fork, though.
Maybe yours is an Invictus? See LINK for some '93 info.

There is also a "Show Me Your Miele" thread, or very similarly named, that you can search for and look through the bikes posted.