OVERVIEW 
Radium Engineering offers two different catch can kits for the R35:
*The 20-0565 PCV line kit mounts near the brake master cylinder in the back of the engine bay and interfaces with the hose that goes from the PCV valve on the engine to the intake manifold (vacuum).
*The 20-0555 crankcase vent kit mounts on the front of the engine and interfaces with the breather lines coming off of the heads and going to the turbo intake piping. This kit contains two catch cans (one for each head breather).
These two kits can be purchased separately or together. 
When deciding which kit (or kits) to purchase, it is important to remember that both kits working together offer the most protection from oil ingestion into the engine. The PCV side kit is effective at keeping oil out of the intake manifold when the PCV valve is open, such as during light cruising, idle, etc.  When in boost, the PCV valve closes and all the engine blow-by comes out of the head breathers. This is a good reason to have catch cans on the crankcase breathers

20-0566-FL TRIPLE CATCH CAN KIT, NISSAN R35 GT-R
For the ultimate in engine protection, Radium recommends 20-0566-FL Triple Catch Can Kit, Nissan R35 GT-R.  

This kit utilizes both the dual "CCV" and single "PCV" catch can kits detailed above.

NOTE: For RHD vehicles, some modifications may be required for PCV catch can mounting. 

Each kit features the following: 
-Anodized oil catch can(s) with integrated condenser and dipstick(s)
-Anodized aluminum R35 GT-R specific mounting brackets
-Anodized aluminum -AN adapter fittings and hose ends
-Stainless steel mounting hardware
-Radium Engineering PCV hose