Julian - I'll bother you about a cam cover another time. If it saves weight then I have to have one but can wait until this order's done with.
Lights...Been thinking about this for some time. Two options the way I see it:
1) Build up a carbon fibre box to mount them on. I reckon this would be relatively straightforward and would, for those equipped with other carbon bits, look quite fetching (as well as being lighter than the rubber caravan mounts).
2) A completely different design of light. Current train of thought is LEDs and to this end, having been staring at the back of buses for a while, I've found a few suppliers...
My current favourite is a single round light that would have a strip of indicator LEDs across the middle, a stop light in the top segment and a tail light in the lower segment.
Not sure how this'd look though 9maybe a bit too "MkI Cortina", so I'm also thinking about strip lights a la the Mk1 Maser 3200 GT.
When I finally move house and have 5mins spare I'm going to mock up some pictures of the rear of my car to see what the various options would look like.
LED lights should be quite a bit lighter than the std. items and should last longer, LEDs not requiring bulbs...they'll also be flush fit more or less.
Am also thinking of knocking up some small but very bright LED fog lights. As mentioned elsewhere, now I've kicked the need for more power I have this irrational desire to make the rear of the car as absolutely clean as possible (which is why I'm also looking into a TVR-esque rear number plate).