Can you post some piccies - that would help clear things up very quickly?
However, as described, and referring to my original 1983 Alfa Range brochure, and being a 1983, 3 door with single twin carb; I'd say it's a 1.5/1.3 SC. Confusing bit is the electric windows, according to the brochure they were only ever fitted to the 5 door Gold Cloverleaf model, so I'd say someone has done some upgrading. Of course there is the possibility of it being a slightly odd dealer special or transition model. Sadly the brochure doesn't have interior pics of the lesser models, but Ti Green Cloverleafs had red carpets (Sprint Ti QV had green) the Gold Cloverleaf has beige and a wooden steering wheel. I recall sitting in a new 1.3 Ti which had brown carpets, so I guess the SC must have had black but can find no piccies to confirm.
A key descriminator will likely be the headlights if large rectangular then it's SC, or late Super, twin headlamps were fitted to Ti models.
As for pecking order, desirability at the time they were new was:
1. Ti Green Cloverleaf (1.5)
2. Ti (1.3)
3. Gold Cloverleaf (1.5) (as 'sud 72 says no 3 door, or Ti Gold Cloverleaf)
not sure whether that has changed much over the years, though the least popular at the time are probably the more rarer versions of what seems to be an increasingly rare model!
Alfa Romeo GT 1.9JTD