Hi Nigel,
I have found that the Lucas 488 lamps are difficult to see for the other drivers.
I did try with LEDs lamps but that was a very difficult task, cutting, riveting etc. and at the end there was not a big improvement due to the low location of the lamps.
At the end I did decided to buy the Lucas L691 stop/tail lamp in combination with the indicators L692.
It is just fit at a DAX 3 mm space in between.
But it was worth of it, now I have plenty of lamination.
How it looks you can see at my Gallery (big picture)
http://www.cobraclub.com/cobragaller...6/limit/recent
I hope that this help!
Regards,
Cobra289