Need to know the thread size on the OEM oil pressure sensor installed in engine

What is your question?

I want to install an electrical oil pressure gauge in addition to the "idiot light" set up from the manufacturer. I want both to be operational so will need to add a part (a block to connect to the engine that will contain both sensors. I am dealing with Summit Gauges and they will find me the parts required if I can give them the data regarding the OEM oil pressure sensor threads into the block. V6 engine 2001 Spyder.