401/403 rear light improvements.

[Geoff Kingston]

I am getting to the stage now where I am thinking about the lighting system on my 401 project, at the front I will probably stick with the hybrid BPF/Halogen bulbs for the headlights though LED lamps are tempting, the rear lamps however are causing more concern because some owners feel they are inadequate in modern traffic, are LED bulbs a worthwhile modification or is something more drastic called for.
I don't really want to fit additional lamps in the bumpers as that would mean cutting into the new stainless steel bumper trims and I have not yet found any acceptable alternative rear light units, I remember reading somewhere about an LED light board being made up to fit inside the existing lamp units but do not remember if this was an innovative owners solution for their own car or a commercially available modification.
I want to fit flashing indicators as well and while the outer lamps at the front can serve that function the rear will require a bit more thought.
I have seen a 401 or 403 with rather nice looking replacement teardrop lamps fitted at the rear but have been unable to find a source for those.
Any ideas and thoughts on the matter would be much appreciated.
Geoff.