What can I say, you and Dash makes a good team and your work is improving very fast.

To be a tough critique, I spotted a few things to fix or can improve on.

HR: http://img661.imageshack.us/img661/5259/HMq4E4.jpg

-1 The rear wheel is not erased properly, I can still see the floor from the old image
-2 The bottom of the diffuser and the inside of the rear wheel arch is different, try to match the blacks

-3 Missing door line, but if the car has no doors then I wont argue
- 4 the area above the arch and the window needs a bit more detail as it is looking too toony/ flat
-5 Try to never have vents hollow and looking empty. Always put some inter cooler, mesh, air piping to fill out the holes if it is realistic!
-6 Your brushing is nice and smooth, but because I can see the hood from the original 350Z and it is noisy, you need to match the paint. so I'd run a Noise filter @1%
-7 Make sure all your vents are lined up together, easiest way would be to make the vents once and just duplicate it 2 times,
-8 Your sticker placement is good, but it is too sharp comparing to the rest of the car, I would blur it a tiny bit to match your soft brushing
-9 I love the lip, but the 2 sides dont match, on the left it is a very curvy (hugging the front bumper shape) but the right side it is sticking out, so I you need to extend the left side or erase some of the right side lip
-10 No more 7K high res, its killing my computer!!!

Really though, this ia a big step up, great work mate!

Wow, thank you so much, so much for giving me feedback J i appreciate it a lot and yeah the car has no doors, you have to enter through the window like nascars, i'm put more work in my next chop for sure that now you gave me feedback J, thank you, thank you thank you thank you soooooooo much and 7K hires won't happen again thank you J