SBC Oil Sending Unit Location......HELP!!!!

[rhodog77]

Hey Guys,
Can someone tell me where the oil guage sending unit installs on a 1984 SBC.

Im pretty sure the one on top of the motor next to the distributor is the sending location for the dummy light. I think!!!! Its the one with the thread at a 45 degree angle



The gauge read sending unit is located just above the oil filter. I think!!!! Im assuming that thats the stock sending unit sticking out of the block with the 2 prongs????? What is the threaded hole above and tho the back for???? If anyone knows or can help, I would really appreciate some schooling on this. thanks a bunch.

Brian