Well - this has opened up a whole new world. Thanks! Plenty of material here for me...........
The only thing I can find which fits the bill is extremely unlikely, but for what it's worth a Dan Parkinson (or should that be the better-known Don?) used to enter a Fiat calling it a Fiat Monza. It was sometimes driven by others and I wondered whether it was powered by an engine from a Fiat-Abarth which he also raced.