I don’t agree with some of the above. When I bought my Alfetta the SPICA had the typical fuel into oil leak so I bought a Wes rebuilt pump. The car runs fantastic. And starting after it sits for a while? first turn of the key. The local SPICA guru raced a car with SPICA and it made good power although he eventually switch to Weber’s.
All that to say you can make SPICA cars run great, even modified ones. Yes you’ll spend money to do right but that’s always the case.
Having both Weber and SPICA cars I think it just boils down to what you want. In the case of my 79 I just wanted to keep it original, cost be damned.
87 Milano Platinum
76 Alfetta GT race car
70 Fulvia 1.3 Rally S
68 Fiat 850