Lol, funny story. I helped source this item when I got my 370z and pushed BDL99 to have it created. Bought it and never installed it cause I ended up no longer having a Z when it was finally finished.
Just found it in storage still in the box it came in. Only opened for pics.
Harnesss only. No camera.
I think I paid $150 for it. Asking for $100 shipped obo.
Link to item:
Plug and Play Bypass Kit (DVD, NAV and backup Camera) Discussion
Couple other DIY links that should help with install:
[DIY] Install Rearview Camera for Stock Nav (2010)
DIY: Rearview Camera & DVD