Ahh thanks for your help... I just need the stud... I can get the sandwich plate wholesale elsewhere for cheaper. Also I can get the oil adapter fittings to run the sensors from GReddy as well... The aftermarket 1/8 NPT pressure probe is for my gauges, and the stock oil pressure sensor I believe runs to the ECU.
One last unanswered question... Where does the stock oil pressure sensor bolt to? Does it fit on the GREX sandwich plate?