Unfortunately I can't help you with your original question. However, you might be able to help me. I think I am having trouble with my oil pressure switch. Would you mind taking a picture of its location so I know what I am looking for and where? I would appreciate it.
Nope, your not nuts. You can move the oil pressure switch back one plug though, I seem to remember a longer standoff from GM, but its been a while, so I could be mistaken
You dont need the standoff FWIW you can simply screw the sensor from a 01-02 into the block However they are wired different and wont connect to the harness of a 03+ harness
Im not really sure what your trying to do but any sensor can be made to work with enough thought and it doesnt really matter where you install it aslong as it is reading pressure worst case you get a bushing or adapter