the "renforzati", I believe refers to the spiral reinforcements to the tubing, so that's SLX?
Decals make it to be late '80's at least, but not that late, as it looks like the head badge is still the little bull graphic, and not the T crest. '87, 88 maybe?
And judging by the amount of chrome, I would say fairly high up in the Torelli line, which would make the odds of it being built by Mondonico much greater, although the seat cluster design is a bit different from the usual Mondonico builds I've seen. Not to say he couldn't have been building them that way at the time.