It's hard for me to tell where I'm looking in pic 1. The vehicle would have come with one. It would have been located on the driver's side under the hood at the front of the engine compartment. If I recall, it would have been either near the frame or it may have sat down inside a mount.
Take a look at the schematic I attached below. See if it helps you locate it. If I'm correct, I see the transmission bell housing in the pic, so it will be on the opposite end of the engine compartment.
Also, could the steel line in your pic run to the vacuum modulator on the transmission?
Let me know.
See pic below.
Tuesday, July 5th, 2022 AT 11:49 PM