It’s an old alfa.
It’s going to break down in a number of crazy ways that you cannot yet even imagine. Unless you go for a total full rebuild of the whole car, then “preventative” maintanace is not really worth it.
To be honest, those old engines are pretty bulletproof, unless like the 2l lump fitted to my 83 GTV, you throw a conrod at 120mph……
Just use the car, and often, and reckon on making friends with the AA. They do love fixing old cars – seriosuly, you will find any decent AA man goes the extra to get you going, when if you were in a modern Kia/Hianddry they would just tow you away.
Fact, unless metal fatige has sheared a part, theres not much on an Alfa that cant be bodged into a get you home fix.
Just enjoy the car, but please, do budget for ongoing repairs – I found that the higher up the range Alfas go, the higher the cost of repairs.
If its not in great order, salt away £250 a month for repairs, and save any surplus towards mot/welding time.
As the owner of a 33, then a Sud Sprint, then a Gtv2000 and then a 75 3l v6 (the head gaskets/cambelt and valve stem seals cost over £1200 back in 2000 !