I'm a fan mate, but not an expert. Like anything old and Italian, parts might be a bit hard to find, and might be expensive, but they were a pretty solid old thing (We used to think of them as Italian Harleys back in the day, nice lazy cruisers that you could ride all day) with good handling and brakes, but the usual crappy Italian electrics.
Not fragile like Ducati's of the same era, but if the cylinders are off I'm presuming that one had a problem? If it was me I'd keep both, one to ride, and one to rat for spare parts, or eventually put back together if the other one is good. Cheers, Terry.