Remove this hose
Then its from each connector into the catch can
If you get the cusco can make sure its the 9mm version. You will also need another 1m of hose (9.5mm) because you only get 1m with the can & some clamps.
http://my350z.com/forum/engine-drivetra ... stall.html - this is the guide I used and its dead easy
I also have for sale 2m of 9.5mm blue samco & 1m of 15mm blue power steering hose if anyone is interested in fitting a catch can.