No one has yet mentioned shocks, and there are always advocates of a "performance" suspension.
It should be recognized that with the 101s and 105s, Alfa designed the car to be as fast as possible over "B" roads in any weather. This explains the long-travel, compliant and well-controlled suspension. Thus, the incredible lean when cornering hard.
With modern "vintage" tires such as the Vreds with some 30% better adhesion, some firming of the suspension enhances handling--on the same roads.
But too firm and too low turns a miracle of handling into that of a contemporary British sportscar. Such as a Healey, MGTF or TR3. All of these I had as Daily Drivers. Also had as DDs 101, 105 and the Alfetta Sports Sedan. With a suspension for the track-days, but not for racing, they were too harsh for back roads.
The best for the latter was my last Super.
Koni Reds set half-firm up front and soft rear. Standard rate, but slightly lower springs at the rear. Dave Rugh recommended 500 # springs at the front also slightly lower. Remove the rear sway bar. A firmer one up front is not needed.
For rough roads, it was the best ever. My first 101 was purchased in 1965.
Hope this is not intrusive.