Just installed new side skirts on my z. Chargespeed bottom lines. The installation was easy. I just had to remove the stock side skirts and then install the chargespeed when the sides were off the car.

The fitment is perfect. Almost no gaps.
The height is perfect. I have alott of speed bumps in my neighborhood and I can clear all of them. Even with a 1 inch drop ( Tien basis)

Functional. At 60mph, I can feel the car being sucked to the ground. It feels really planted especially on high speed curves.

I bought a used genuine nismo v1 wing from Japan. I'll post it with a review, when I get chance to paint and have it installed

 

Looking good! I love my Chargespeed bottom line sides and rears. I had the same experience as you - fitment was spot on and no issues with install.

No substitute for authentic parts as opposed to replicas!

I see your co-pilot approves as well.

 

That looks good! Love the OEM Nismo front lip. I wished I still had mine.