pv83:
OM badged Unic/Fiat/Iveco?
That’s a UNIC 340 V8 chassis (the raised cab is the clue), rebadged as an OM, presumably to give Fiat a “premium” product for it home market. The badge on the cab suggests that OM’s mechanical contribution was the extra axles. Maybe Fiat wanted to supply its customers with an “in-house” multi-axle vehicle, rather than relying on conversion specialists. Whatever, that lorry was King of Italian roads in the early 1970’s.