Zymol has a great range of waxes and cleaners, and curiously they have a wax specifically for Italian cars (called Ital Glaze), based on the notion that old Italian cars don't have the same thickness/quality of paint that some other cars do.
Haven't used the Italian car wax, but have used their standard HD-cleanser as well as titanium wax, which I've found to be excellent on my GTV. Albeit my car has been repainted in the past.
The cleaner seems to be non-abrasive, and I was amazed at how many surface defects it removed with lots of elbow grease. The wax is just a wax with no cleaning element.
The Zymol range is quite expensive, and the Ital Glaze is REALLY expensive, and some of the other products have just silly prices (one of the waxes is $1100!!). I paid about $200AUD for a kit, and was stoked with the results, my GTV shines like a bald man's head in a heatwave.
I think you can get a kit including the Ital glaze for about $150USD.
Their website is
www.zymol.com
And no affiliation, I'm just speaking from my own experience.
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'74 GTV 2000 - [COLOR="Blue"]LeMans Blue [/COLOR]

'70 1750 Berlina - Biancospino. Project street and occassional track car
'74 2000 Berlina - parts car
'99 Seat Cordoba - [COLOR="Gray"]daily driver[/COLOR]
'95 Peugeot 306 S16 - gone, but not forgotten