Main shank and accessories to suit the 350z Drift Knuckles here;
https://us.gktech.com/products/z33-350z-g35-4130-super-lock-drift-knuckles?_pos=2&_psq=dknk&_ss=e&_v=1.0

Being;
1x #4
2x #7
2x #8

From the ASM here;
https://us.gktech.com/cdn/shop/files/350Z-DKNK_-_Customer_ASM.pdf?v=10570440717043920308

Sold individually, so if you add 1x to the cart you will receive what is shown in the product photo to suit SKU: 350Z-DKNK

If you need the inserts to suit this shank also, they can be seen here;
https://us.gktech.com/products/z33-350z-g35-front-drift-knuckle-ball-joint-inserts