No issues at all, mine also had a tiny bit of rust, it's a common issue in R34's. Legally speaking I think you have to have one there, but i just passed a roadworthy with it, so who cares.
To make all four rear tail lights to light up you need to add 2 globes to each light and wire them up to the brake light, piss easy and costs f**k all to do it.
Lucky beauty is in the eye of the beholder Gathem, i love my genuine cwest kit.
I also just added 3 autometer gauges in the triple gauge cluster, and one which is in place of the cigarette lighter, looks mint, i'll post up pictures later this week. Because the gauges were a tiny bit smaller than the gauge holder (about 1.5mm) i got a peice of aluminium, had it painted matte black and then mounted them into the centre of that, also getting rid of the glass that is in front of the stock gauges, also installed a new mongoose alarm which works in conjuction with my factory central locking key, greddy turbo timer mounted flush with the dash, just above the sunglasses holder for those who know where i'm talking about.
Next is R34 GTR seats, 10" subwoofer and an amp, all hidden so you cant see a thing. My attention to detail is stupidly insane almost, but perfection and a clean look is what i'm after, it'll all be worth it in the end. Also plan to spray the centre console and window switches in the same colour, or maybe silver, undecided yet.