Hello,
I did put two additional rear lamps at last, making the necessary holes in the blades of the bumpers, as I really hated the idea of making holes in the aluminum panels of the body. They are reasonably bright and IMHO these Lucas round red light don't spoil too much the lines of the rear.
Bristol 403-1404 custom-made radiator blinds
(please scroll to the bottom pic to see how they look)
LED lights are very good indeed but are quite 'directional' and the Aerodynes' rear clusters are angled 45° outwards, so they might not be as effective as we would need, in my case I chose to fit brighter conventional lamps.
The next thing to do will be to add a central stop light in the rear window, but with brakes to mend and leaking fuel pump this is now a lower-priority issue....
All the best
Stefano