After a while, I'm back (had some issues with my work that I could not work on the Alfa).
My engine is in a bad shape. as I see it, I have 2 options:
1. rebuild the current one, 1.6, previously was on Alfa 75 (Milano?).
2. replace the engine to 2.0: here there are also 2 options:
a. "regular" 2.0
Can an engine from Alfa 164 (2.0 TS) be fitted to a 1988 spider? that one is easy to get here...
Where is 'here'? I assume not USA so I confess I don't know much about the engine swap options. You might try browsing the 'Engine Conversions' section of the BB to see if anyone has done what you are asking about.