Take your 35mm Freeze Plug Port and adapt it to a -20AN hose. This is a press fit.
Originally designed around a motor-plated 2JZ engine which requires delete of the OEM water pump and blocks your water inlet. Keep water flowing in your block and pair with your choice of electric water pump. This should work with any 35mm free plug port for your "outside the norm" water cooling solution.
PHR -20AN Upper Waterneck, Non-Bypass for 2JZ-GTE
$ 345.35