This solved my problem - maybe same as yours - to bring the handlebar up and closer on a 1996 Klein road bike I recently purchased:

https://www.amazon.com/Sunlite-Alloy...d_i=B003Q3SY2Y

Easy to install, good looking, and very reasonably priced. Measure carefully (quill diameter and handlebar diameter where it is clamped) and get a stem that will safely help you get the fit you want.

I see your quill is 22.2 mm. Italian handlebar of your Gios's vintage is probably 26.4 mm.