I have finally fitted the rear bumper, lights, and boot latch/ mechanism. Latch mechanism and boot lock assembly is from Russell @ Grassbank. It works well although is a pig to fit but that is the car, not anything to do with Russell.
My nemesis, the bootlid, still needs work (bodyshop are doing that as I have run out of ideas with it) but it shuts and locks now.
The rear bumper needed a LOT of grinding back on the nearside quarter, as the angle was wrong, so it hit the car body. I chose to go with overriders, as I find it more of a 1960s authentic look. They were an absolute pain (front and rear). Drilling polished stainless is hard enough; trying to drill it on a 'point' is much more difficult. I had to buy a really expensive set of cobalt drill bits, as my others wouldn't touch it.
One major advantage, though, is that I drilled all the way through the bumper mounting bracket and bolted the overriders to the bracket, thus giving a strong mechanical fixing for the bumper in two places aswell. The bumper has also been Tiger-sealed to the bracket.
The bumper returns on the rear are quite long, need some support and were not square. I shaped some treated pieces of timber, bonded those to the inside of the bumpers, covered them in Tigerseal and painted it (to prevent rot in future). I then used two woodscrews either side to fix through the GRP and into the timber. They are virtually invisible and make everything nice and solid.
I had to pack out the boot clasp by a LOT (around 20mm) to line-up the latch. I will make it prettier later.
The rear (apart from the bootlid) is done and ready to dismantle everything and be painted.
I need to sort out fixings for the headlight covers and shape the stainless covers over them, as they don't fit neatly at present. Then the front is done and ready for paint.
A few pictures of the bling and Grassbank's boot mechanism for your delight... some pics are a bit fuzzy; I have an old phone!