Neither are required if you're deleting Hicas, the front Steering rack is identical regardless, and you can basically loop between the inputs and outputs of the HICAS solenoid that sits in the drivers side of the engine bay (this way the fluid will run through the power steering cooler) meaning you don't need to touch your power steering pump. All you really need is 2x hose clamps and 50cm of rubber hose and a hack saw