Question: Power Window Wiring - Grounds

[Tidybuoy]

I'm installing power windows. The main wiring harness in the trunk has two large sets of ground wires (one at driver side and one at passenger side).

I can't find any "pre-existing" ground point on the passenger side. I did find a spot on the driver side.

Does anyone know of the correct spot on the passenger side - or even better, have a photo. I'd hate to drill holes only to find the correct spot after I'm done.

Thanks in advance..............Vern