Here are a pair generic white drl's with amber indicators for sale, they are pretty hard to dimension so I will do my best so all measurements are approx.

L 255mm, W 30mm, Depth 25mm one end and 20mm the other.

As you can see from the pics they are slightly curved (10mm ) in the middle.

looking for around £15.

They would look quite smart blended either side of a 7 nose cone.