Can't really i.d. without photos...TSX is a great tube set.... some say heavy/stiff but still very high end for its day, etc.
BB is Itialian....sounds like a great bike, but you would get better responses if you started a new thread....
BTW welcome to BF.
Best, Ben

Does it look like this?
https://steel-vintage.com/bianchi-re...e-1990s-detail

From another Bike related site:
https://forums.roadbikereview.com/beginners-corner/what-reparto-corse-components-313093.html
B.F.
Help identifying a Bianchi Reparto Corse
Ken Rick