OK, Guzzi fuel pump unit at home and examined: Moto Guzzi part no on bottom plate: 01107290 that goes into a 2003 V11 Le Mans fuel tank. The unit is made by Bitron.
Bimota even fits Bitron fuel pumps (but they did fit - even - lesser quality parts in the past too, by the way.....;-) It's NOT a direct fit to the Peg, because it has a return line connection, as the Peg unit has none. To me ...