It's behind the grill - on the passenger side of the radiator tunnel. Other end is under the cab mount rubber stop on the frame and isn't even accessible for a picture. Have to disconnect the CTIS air lines, cut a bunch of zip ties to move wiring and AC hoses then throw tools and swear at if for an hour or so.
This is the upper mount stud. Completely worthless. Inaccessible to "fix" it so the strap can sit flush and have the star washer pierce the paint.
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You can see how the strap and the star washer are proud of the surface due to the weld not being ground flat around the stud. It was only making contact through the deformed-thread lock nut and the flat washer on the front side of the strap.
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I reversed which end was on the cab - the frame side has a larger horseshoe opening and worked perfect (with the star washer in place) on the cab hinge bracket. I drilled a new hole for the frame side on the frame nose behind the bumper. I didn't have to modify the strap (which is in great shape on my truck being from the desert).
(I used the other end for this connection - didn't want to enlarge the hole for this socket-head mounting bolt).
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