I will start a list of parts here you need to install the GT-R IM Conversion - this will be updated until the project is finished:
from ChrisUR Germany
1x lower GTR_2_Z33 Manifold Adapter
4x fuel rail holder for stock or aftermarket rails
2x 10mm to 6mm Hose Connectors
Xx Hose to connect to all vaccuum and water ports on the R35 plenum
from Nissan (I can also supply them with the kit)
1x - R35 Intake Manifold Plenum*1
1x - R35 Engine Cover*2
6x 16618EA000 - Z33 O-Ring Injectors
6x 166188J000 - Z33 O-Ring Injectors
1x 1661810V10 - Z33 O-Ring Fuel Pressure Regulator
2x 16175ET80A - R35 Throttle Body Gasket
1x - R35 Manifold to Plenum Gasket
2x - Z33 Head to lower Manifold Gasket
*1 you may also use 3rd party products e.g. GReddy, BoostLogic, etc. (fitment not verified yet)
*2 optional you can buy a carbon fiber cover like this
from eBay