Up for purchase is a Dual Headlamp Set that came in an inventory of spare parts that came when our local Italian Sportbike dealership retired. The distance is 155 mm between the connectors for each lamp. 300 mm is the distance for the top mounting points and 250 mm is the distance for the lower mounting points.
As there is no brand name it is your responsibility to check with your local dealership or race shop. Take this opportunity to pick up a good replacement, spare or for your Endurance Racer.