Try posting in the ISO thread ( ISO and for trade thread part 5 ) for the parts. If that fails, there's always Ebay.

The OEM tyres are pretty narrow, 700 x 20C. These days most riders want to fit the fattest possible tyres. I'm not sure exactly what these frame will accommodate. Anybody? I imagine current the tyres are somewhat bigger than OEM, so you can always check the size markings on them.

I also just noted that the brake levers aren't Victory, which have grip/lightening holes drilled in them. However, the catalogue picture doesn't showed drilled levers either, so it just appears to be another case of the factory downgrading so save a few lira.