These hotwheels trucks have been sitting around in the "to do" pile until the muse strikes. The original truck is at the top right, with a cut down 4 wheel below it. The cab looks pretty modern at the moment.
The only decent references for Italian HQ signals vehicles that I could find were for General Bergonzoli's big Lancia caravan, as ably executed by Tradgardemastre, or the 6-wheel Dovunque office-bodied signals van seen below.
I thought that perhaps a captured British signals body might be quick, easy and suitably generic. It was, but the model still looks modern. Adding a grille to the front helped, but surprisingly, getting rid of the blue finish made more of a difference, as did removing the little dropped front to the froward side windows. Painted detail will do the rest. the final result is a vaguely convincing hybrid remeniscent of an Alfa Romeo 800 cum Fiat 626.