Those if I am not mistaken require True Coilovers in the rear to work. Those are Rear Toe Links which are different than the rear camber links from SPL. If you want to adjust rear Camber you need the SPL kit.
I would also throw in some SPC toe bolts and you will be able to get your car back to OE spec! SPL has nothing but great reviews on this forum. Everyone love them
SPL Titanium Rear Camber Links 370Z, G37, G35 | KamiSpeed.com