Originally Posted by OptionZero

true style = spring wrapped around damper



with this style you need SPL toe arms

https://www.splparts.com/products/re...-370z-g37.html

OEM or "divorced" style = spring separate from damper, in a bucket on one of the arms



With this style you need the SPL Mid-link
https://www.splparts.com/products/re...-370z-g37.html

BE AWARE - these two different setups require different spring rates in the rear. As they have different geometry, you need roughly half the stiffness in the true type as in the OEM type. IE, a 10kg spring in rear for the OEM type is about the same as a 5 kg rear spring in true type. There is math involved, don't ask me.


EDIT:
When you get the rear suspension arms you also need to get the Eccentric Lockout kit:
https://www.splparts.com/products/ec...-370z-g37.html

These are important because once you have all these adjustable arms, you want to use THEM for adjusting alignment. The factory setup in the rear uses two eccentric bolts on each side; these will slip and **** up your alignment. You no longer need the adjustment point so locking them in place eliminates that weak point

Optional, you don't NEED to replace these:
https://www.splparts.com/products/bu...-370z-g37.html

These are simply convenient to install when the car is up and you're doing an alignment.