You need to install a threaded T-fitting into the hole where your oil pressure sending unit goes. Re-install the OPSD in one end and run the line off the other. Get something sturdy. I've see softer metals crack off ond blow oil everywhere. This could cost a motor at high RPM's. Also, determine now if you are going to run a mechanical oil pressure gauge in the car now because you may want to make your splitter with three prongs.