My friend Frank had two of these Benellis in the 70th, one with drum brake and than a later model with disk brake at the front.
We were participating in a kind of endurance \ ralley sports with stock bikes. We could run the N?rburgring 400 Km for 50 DM (25 ?). I was running a Suzuki 250.
The advantage of the Benelli was less weight, approx 135 Kg but minus was just 231 cc because of Italian tax issues.
And just 5 speed gearbox and 25 mm Delortos. But we could buy real 250 barrels and 30 mm Dellortos. The bike was competetive and best result was a 5th place of 70! Uwe Witt also run that competition in those days but with Yamaha.
Andre