That looks really good from the back - well played.
The bootlid rubber is inside out - the seal section should point away from the opening.
This might help it shut easier, although it will give over time.
Unusual routing for your light wires too - they normally go along under the slam panel and then into the wings where the slam panel meats the inner wing - there is already an opening. This keeps them higher up and out of the road spray etc.
For the rad bracket - there should be some little sleeves that fit into the grommets to make the hole nearer the size of the bolts (or there were special bolts with a larger diameter shoulder).
On your photo of the lamp wiring by the rad - what do the two captive nuts on the subframe hold? We didn't have those on UK cars.