I've been looking at some suspension parts for my 04 coupe. It's still all stock suspension, however I have been looking into the Nismo Front Upper Control Arms, Nismo rear mid links / spring arm. Nismo Rear Traction Arms, Nismo Sway Bar and Sway Bar End Links. Anyone have any experience with these? are they worth it? I can't find much info or reviews on people using these parts.

 

I don't recommend them, just get yourself a good adjustable camber kit which will replace all of those components with high quality adjustable ones. Personally I have the Z1 Motorsports camber kit. Sway bar end links is your choice. Sway bar the best one on the market is probably the Hotchkiss adjustable bar.

The nismo components are great for a completely bone stock brand new vehicle that does not have aftermarket support, however the G35 does have excellent aftermarket support and there are a lot better options for half the price of the nismo stuff usually.

Edit: the Z1 Motorsports camber kit replaces your front upper control arms, your re ar camber bars, and your transverse link which is commonly mistaken as a " traction arm".

 

I'm looking to run at stock height more or less however, would like the suspension to be stiffer & tighter. Considering going 350z springs and koni shocks struts and overhauling the control arms, and sway bars etc. Also that W looking tunnel brace I have is pretty rusted and don't see many aftermarket options for a replacement