Installation of the GT1R OPR Kit will be significantly easier to do with the engine out, and should be handled by a qualified technician. This kit is designed to work with many turbo kits on the market, but may not work with every single one. If your turbo kit uses hard turbo feed lines, this will not work as this kit is designed. The existing turbo oil feed lines will be reused in most cases, so do not discard. This kit introduces the Turbsmart Oil Pressure Regulator in between the factory turbo oil distribution block and the turbo oil feed lines. 
To begin installation you will use the supplied M12 block off fitting and crush washer to block off the bank 1 oil feed on the factory oil distribution block. The distribution block is located on the backside of the engine as seen in the diagram below and is PN 15192:
The bank two side on the block will now feed the Turbosmart oil pressure regulator using the provided banjo. Once installed your block should look as follows (the kit has been updated since this picture was taken and now uses a nice M12 aluminum block off fitting with crush washer as opposed to the old style with the black bolt):
The Turbosmart OPR and provided bracket can be installed in a couple different places in the area between the lower intake plenum and coolant transfer uterus. In the picture below you can see it mounted on the coolant uterus. You can also see the provided -03AN line running from the banjo fitting on the distribution block to the left side of the OPR below:
With the OPR kit mounted you can now plumb the turbo feeds to the T-fttings and verify all connections are tight. This will complete installation!