Among both Alfa and Lancia 4 cylinders, the 1.3L engines seem to me more balanced and lively than the 1.6L, thus noticeably more enjoyable to drive. The difference in power simply doesn't matter, compared with modern cars....Don
Have you driven a 1,6 Fulvia? Because I really disagree about the difference in power.
There's no question that the 1,3 Fulvia is smoother and freer revving -- the 1,2 is even better than the 1,3. And without suggesting that either is better, there's a huge difference in character between the 1,3 and the 1,6; they drive more like two different models than just a different engine. The 1,6 makes significantly more power and far greater torque than the 1,3. There's a substantial difference on the road with modern cars.
I'll admit that my current engine makes lot more than stock power. And I run short gearing. But there was a real difference even with my tired stock engine.
In any case, a 15-year old daughter would be much better served by a 1,3 Sport. Sport 1600s are hard to find and a good bit more expensive. If you're looking for a daily driver, the early all-alloy cars tend to be a little more fragile, so I'd suggest a 1,3S -- either 1st or 2nd series, or a later S1 1,3 with only the doors and bonnet in alloy. The only real difference is the leva lunga of the 1st series 4-speed versus the more 'modern' vertical stick of the S2 5-speed; that comes down to personal preference.
Beyond that, choose on the basis of condition.
And, yes -- the Artcurial car does look very nice. Though for a 15-year old driver, I think I'd put the bumpers back on...