The rear wing is a copy of the C-West E-Type. Not quite the same since the mounting plates for the C-West kit wrap around the hatch from the vertical part to the horizontal part, but its pretty close nonetheless. It would take a transpotter to really notice it without having the two side by side.

The wide fenders are similar to the Veilside V3 kit, but without the exposed rivets. The over-fenders in your photos also seem to sit a little lower on the flanks than Veilside's.

The rear bar itself appears to be similar to the Ings+1 N-Spec bodykit, albeit a bit more aggressive on the rear valance. You could come close with how high that lower crease (above the black valance/exhaust) sits with the Weber Sports Serie 2 rear bar, and then just shaping the bottom out of mesh yourself.

No-one does rear venting like that photo, short of race cars. It would be a custom job. But still, hacking up an existing bodykit shouldn't be impossible.

The sideskirts are quite generic aftermarket 350Z (where they come straight down rather than curving in at the end), but it would also be a custom job where the front overfender blends into the sideskirt.