New Nismo Z owner with a couple questions

BrockDM1

Greetings! Im a new member here and just purchased my 2015 Nismo Z tech. Absolutely love the car, I've had a handful of G37's in the past but this surpasses my amazement. What an incredible car.

So Im debating adding a few modifications.

First and foremost I need a plate relocate kit. I saw Stillen makes one, i love the concept but it said it excl Nismo? Does anyone know what about it doesn't work? Or any similar brands that offer it.

Next Im contemplating a suspension upgrade, I love the Nismo suspension but driving around downtown Chicago can be pretty rough, as I'm sure other Nismo drivers would agree. What coil over brands offer a nice set up? Not looking to slam it or anything, maybe lower it an inch tops, I just want a smoother ride. That being said I want to try and keep it between $2-3k. I debated air but dont want to lose my entire trunk due to compressors and tanks.

Sorry to just join and post all these questions right away, Ill be sure to look around and pay my contributions! Happy to be a new Z owner