Just a comment, seeing that chart (I have one like that for the Alfettas yet) but I do know that the Alfetta GT's and sedans we got in the US came with the front suspension jacked up, evidently to get the headlights up to some US requirement. Never did find out if that chart was for the European settings or for the US version, never actually measured the cars.
When the Alfetta front was lowered back down via the torsion adjustment, they looked ever so much better, as I think they were designed to be. It's what I was told by my dealer back then anyway. Once in a while I still see an Alfetta with the high front setting. Looks pretty weird, awkward.
The Giulia Sprint GT/GTV styling on the other hand looked kind of funny if the front end was lowered too much, the overall body style not lending itself to that stance. The entire body, or just maybe the front, could be lowered slightly. Same for spiders I think.