Oil pressure gauge

[67Vega]

Hey guys, I got a 67 gmc c1500 with a 250 I6. I'm updating all of the wires in it along with the dash cluster. The old dash wasn't working so I'm updating it to a digital one. Only problem I'm running into is that I can figure out how to locate the area I'm supposed to install the oil pressure sensor, and how to run any wires to the dash cluster. If you guys know how to do this, I would greatly appreciate any help because I'm kind of lost on this. Thanks in advance.